Home / 78,732,134.40-118,098,201.60-72,992,571.60

Finding the Fourth Proportional to 78,732,134.40, 118,098,201.60 and 72,992,571.60

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Solution

The fourth proportional to 78,732,134.40, 118,098,201.60 and 72,992,571.60 is: 109,488,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,134.40 : 118,098,201.60 = 72,992,571.60 : x
  2. Step 2: Convert to fraction form
    78,732,134.40/118,098,201.60 = 72,992,571.60/x
  3. Step 3: Cross multiply
    78,732,134.40x = 118,098,201.60 × 72,992,571.60
  4. Step 4: Simplify right side
    78,732,134.40x = 8,620,291,436,119,233
  5. Step 5: Solve for x
    x = 8,620,291,436,119,233/78,732,134.40
  6. Step 6: Final answer
    x = 109,488,857.40

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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.