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Finding the Fourth Proportional to 138,389.04, 207,612.72 and 44,887.50

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Solution

The fourth proportional to 138,389.04, 207,612.72 and 44,887.50 is: 67,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,389.04 : 207,612.72 = 44,887.50 : x
  2. Step 2: Convert to fraction form
    138,389.04/207,612.72 = 44,887.50/x
  3. Step 3: Cross multiply
    138,389.04x = 207,612.72 × 44,887.50
  4. Step 4: Simplify right side
    138,389.04x = 9,319,215,969
  5. Step 5: Solve for x
    x = 9,319,215,969/138,389.04
  6. Step 6: Final answer
    x = 67,340.71

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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.