Home / 78,732,073.40-118,098,110.10-72,992,510.60

Finding the Fourth Proportional to 78,732,073.40, 118,098,110.10 and 72,992,510.60

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Solution

The fourth proportional to 78,732,073.40, 118,098,110.10 and 72,992,510.60 is: 109,488,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,073.40 : 118,098,110.10 = 72,992,510.60 : x
  2. Step 2: Convert to fraction form
    78,732,073.40/118,098,110.10 = 72,992,510.60/x
  3. Step 3: Cross multiply
    78,732,073.40x = 118,098,110.10 × 72,992,510.60
  4. Step 4: Simplify right side
    78,732,073.40x = 8,620,277,553,314,216
  5. Step 5: Solve for x
    x = 8,620,277,553,314,216/78,732,073.40
  6. Step 6: Final answer
    x = 109,488,765.90

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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.