Home / 187,900.29-280,818.72-137,405.70

Finding the Fourth Proportional to 187,900.29, 280,818.72 and 137,405.70

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Solution

The fourth proportional to 187,900.29, 280,818.72 and 137,405.70 is: 205,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,900.29 : 280,818.72 = 137,405.70 : x
  2. Step 2: Convert to fraction form
    187,900.29/280,818.72 = 137,405.70/x
  3. Step 3: Cross multiply
    187,900.29x = 280,818.72 × 137,405.70
  4. Step 4: Simplify right side
    187,900.29x = 38,586,092,794.70
  5. Step 5: Solve for x
    x = 38,586,092,794.70/187,900.29
  6. Step 6: Final answer
    x = 205,354.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.