Home / 91,068.30-136,543.05-81,737.10

Finding the Fourth Proportional to 91,068.30, 136,543.05 and 81,737.10

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Solution

The fourth proportional to 91,068.30, 136,543.05 and 81,737.10 is: 122,552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,068.30 : 136,543.05 = 81,737.10 : x
  2. Step 2: Convert to fraction form
    91,068.30/136,543.05 = 81,737.10/x
  3. Step 3: Cross multiply
    91,068.30x = 136,543.05 × 81,737.10
  4. Step 4: Simplify right side
    91,068.30x = 11,160,632,932.16
  5. Step 5: Solve for x
    x = 11,160,632,932.16/91,068.30
  6. Step 6: Final answer
    x = 122,552.34

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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.