Home / 112,535,985.78-168,629,654.84-78,059,415.20

Finding the Fourth Proportional to 112,535,985.78, 168,629,654.84 and 78,059,415.20

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Solution

The fourth proportional to 112,535,985.78, 168,629,654.84 and 78,059,415.20 is: 116,968,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,535,985.78 : 168,629,654.84 = 78,059,415.20 : x
  2. Step 2: Convert to fraction form
    112,535,985.78/168,629,654.84 = 78,059,415.20/x
  3. Step 3: Cross multiply
    112,535,985.78x = 168,629,654.84 × 78,059,415.20
  4. Step 4: Simplify right side
    112,535,985.78x = 13,163,132,240,954,804
  5. Step 5: Solve for x
    x = 13,163,132,240,954,804/112,535,985.78
  6. Step 6: Final answer
    x = 116,968,204.88

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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.