Home / 143,721.10-215,581.65-137,269.90

Finding the Fourth Proportional to 143,721.10, 215,581.65 and 137,269.90

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Solution

The fourth proportional to 143,721.10, 215,581.65 and 137,269.90 is: 205,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.10 : 215,581.65 = 137,269.90 : x
  2. Step 2: Convert to fraction form
    143,721.10/215,581.65 = 137,269.90/x
  3. Step 3: Cross multiply
    143,721.10x = 215,581.65 × 137,269.90
  4. Step 4: Simplify right side
    143,721.10x = 29,592,871,537.34
  5. Step 5: Solve for x
    x = 29,592,871,537.34/143,721.10
  6. Step 6: Final answer
    x = 205,904.85

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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.