Home / 133,079.20-199,618.80-69,874.90

Finding the Fourth Proportional to 133,079.20, 199,618.80 and 69,874.90

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Solution

The fourth proportional to 133,079.20, 199,618.80 and 69,874.90 is: 104,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.20 : 199,618.80 = 69,874.90 : x
  2. Step 2: Convert to fraction form
    133,079.20/199,618.80 = 69,874.90/x
  3. Step 3: Cross multiply
    133,079.20x = 199,618.80 × 69,874.90
  4. Step 4: Simplify right side
    133,079.20x = 13,948,343,688.12
  5. Step 5: Solve for x
    x = 13,948,343,688.12/133,079.20
  6. Step 6: Final answer
    x = 104,812.35

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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.