Home / 78,732,136.40-118,098,204.60-72,992,573.60

Finding the Fourth Proportional to 78,732,136.40, 118,098,204.60 and 72,992,573.60

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Solution

The fourth proportional to 78,732,136.40, 118,098,204.60 and 72,992,573.60 is: 109,488,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,136.40 : 118,098,204.60 = 72,992,573.60 : x
  2. Step 2: Convert to fraction form
    78,732,136.40/118,098,204.60 = 72,992,573.60/x
  3. Step 3: Cross multiply
    78,732,136.40x = 118,098,204.60 × 72,992,573.60
  4. Step 4: Simplify right side
    78,732,136.40x = 8,620,291,891,293,357
  5. Step 5: Solve for x
    x = 8,620,291,891,293,357/78,732,136.40
  6. Step 6: Final answer
    x = 109,488,860.40

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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.