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Finding the Fourth Proportional to 138,501.60, 207,723.60 and 59,618.40

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Solution

The fourth proportional to 138,501.60, 207,723.60 and 59,618.40 is: 89,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,501.60 : 207,723.60 = 59,618.40 : x
  2. Step 2: Convert to fraction form
    138,501.60/207,723.60 = 59,618.40/x
  3. Step 3: Cross multiply
    138,501.60x = 207,723.60 × 59,618.40
  4. Step 4: Simplify right side
    138,501.60x = 12,384,148,674.24
  5. Step 5: Solve for x
    x = 12,384,148,674.24/138,501.60
  6. Step 6: Final answer
    x = 89,415.20

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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.