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Finding the Fourth Proportional to 138,563.60, 207,816.60 and 59,680.40

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Solution

The fourth proportional to 138,563.60, 207,816.60 and 59,680.40 is: 89,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,563.60 : 207,816.60 = 59,680.40 : x
  2. Step 2: Convert to fraction form
    138,563.60/207,816.60 = 59,680.40/x
  3. Step 3: Cross multiply
    138,563.60x = 207,816.60 × 59,680.40
  4. Step 4: Simplify right side
    138,563.60x = 12,402,577,814.64
  5. Step 5: Solve for x
    x = 12,402,577,814.64/138,563.60
  6. Step 6: Final answer
    x = 89,508.20

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1.5x scale

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.