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Finding the Fourth Proportional to 123,398.64, 185,095.80 and 40,292.64

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Solution

The fourth proportional to 123,398.64, 185,095.80 and 40,292.64 is: 60,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,398.64 : 185,095.80 = 40,292.64 : x
  2. Step 2: Convert to fraction form
    123,398.64/185,095.80 = 40,292.64/x
  3. Step 3: Cross multiply
    123,398.64x = 185,095.80 × 40,292.64
  4. Step 4: Simplify right side
    123,398.64x = 7,457,998,434.91
  5. Step 5: Solve for x
    x = 7,457,998,434.91/123,398.64
  6. Step 6: Final answer
    x = 60,438.25

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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.