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Finding the Fourth Proportional to 138,451.60, 207,774.60 and 59,622.40

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Solution

The fourth proportional to 138,451.60, 207,774.60 and 59,622.40 is: 89,475.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,451.60 : 207,774.60 = 59,622.40 : x
  2. Step 2: Convert to fraction form
    138,451.60/207,774.60 = 59,622.40/x
  3. Step 3: Cross multiply
    138,451.60x = 207,774.60 × 59,622.40
  4. Step 4: Simplify right side
    138,451.60x = 12,388,020,311.04
  5. Step 5: Solve for x
    x = 12,388,020,311.04/138,451.60
  6. Step 6: Final answer
    x = 89,475.46

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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.