Home / 84,499,848,045.90-126,749,772,068.85-78,114,619,860.30

Finding the Fourth Proportional to 84,499,848,045.90, 126,749,772,068.85 and 78,114,619,860.30

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Solution

The fourth proportional to 84,499,848,045.90, 126,749,772,068.85 and 78,114,619,860.30 is: 117,171,929,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499,848,045.90 : 126,749,772,068.85 = 78,114,619,860.30 : x
  2. Step 2: Convert to fraction form
    84,499,848,045.90/126,749,772,068.85 = 78,114,619,860.30/x
  3. Step 3: Cross multiply
    84,499,848,045.90x = 126,749,772,068.85 × 78,114,619,860.30
  4. Step 4: Simplify right side
    84,499,848,045.90x = 9,901,010,262,537,889,906,688
  5. Step 5: Solve for x
    x = 9,901,010,262,537,889,906,688/84,499,848,045.90
  6. Step 6: Final answer
    x = 117,171,929,790.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.