Home / 78,732,108.80-118,098,163.20-76,606,344.80

Finding the Fourth Proportional to 78,732,108.80, 118,098,163.20 and 76,606,344.80

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Solution

The fourth proportional to 78,732,108.80, 118,098,163.20 and 76,606,344.80 is: 114,909,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,108.80 : 118,098,163.20 = 76,606,344.80 : x
  2. Step 2: Convert to fraction form
    78,732,108.80/118,098,163.20 = 76,606,344.80/x
  3. Step 3: Cross multiply
    78,732,108.80x = 118,098,163.20 × 76,606,344.80
  4. Step 4: Simplify right side
    78,732,108.80x = 9,047,068,610,345,872
  5. Step 5: Solve for x
    x = 9,047,068,610,345,872/78,732,108.80
  6. Step 6: Final answer
    x = 114,909,517.20

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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.