Home / 243,565.23-336,135.78-136,139.79

Finding the Fourth Proportional to 243,565.23, 336,135.78 and 136,139.79

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Solution

The fourth proportional to 243,565.23, 336,135.78 and 136,139.79 is: 187,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,565.23 : 336,135.78 = 136,139.79 : x
  2. Step 2: Convert to fraction form
    243,565.23/336,135.78 = 136,139.79/x
  3. Step 3: Cross multiply
    243,565.23x = 336,135.78 × 136,139.79
  4. Step 4: Simplify right side
    243,565.23x = 45,761,454,500.69
  5. Step 5: Solve for x
    x = 45,761,454,500.69/243,565.23
  6. Step 6: Final answer
    x = 187,881.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.