Home / 128,758,645.90-193,137,968.85-117,043,324.30

Finding the Fourth Proportional to 128,758,645.90, 193,137,968.85 and 117,043,324.30

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Solution

The fourth proportional to 128,758,645.90, 193,137,968.85 and 117,043,324.30 is: 175,564,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,758,645.90 : 193,137,968.85 = 117,043,324.30 : x
  2. Step 2: Convert to fraction form
    128,758,645.90/193,137,968.85 = 117,043,324.30/x
  3. Step 3: Cross multiply
    128,758,645.90x = 193,137,968.85 × 117,043,324.30
  4. Step 4: Simplify right side
    128,758,645.90x = 22,605,509,922,753,848
  5. Step 5: Solve for x
    x = 22,605,509,922,753,848/128,758,645.90
  6. Step 6: Final answer
    x = 175,564,986.45

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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.