Home / 78,373.31-117,711.23-67,154.00

Finding the Fourth Proportional to 78,373.31, 117,711.23 and 67,154.00

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Solution

The fourth proportional to 78,373.31, 117,711.23 and 67,154.00 is: 100,860.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,373.31 : 117,711.23 = 67,154.00 : x
  2. Step 2: Convert to fraction form
    78,373.31/117,711.23 = 67,154.00/x
  3. Step 3: Cross multiply
    78,373.31x = 117,711.23 × 67,154.00
  4. Step 4: Simplify right side
    78,373.31x = 7,904,779,015.09
  5. Step 5: Solve for x
    x = 7,904,779,015.09/78,373.31
  6. Step 6: Final answer
    x = 100,860.61

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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.