Home / 143,711.90-215,567.85-129,715.10

Finding the Fourth Proportional to 143,711.90, 215,567.85 and 129,715.10

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Solution

The fourth proportional to 143,711.90, 215,567.85 and 129,715.10 is: 194,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,711.90 : 215,567.85 = 129,715.10 : x
  2. Step 2: Convert to fraction form
    143,711.90/215,567.85 = 129,715.10/x
  3. Step 3: Cross multiply
    143,711.90x = 215,567.85 × 129,715.10
  4. Step 4: Simplify right side
    143,711.90x = 27,962,405,219.54
  5. Step 5: Solve for x
    x = 27,962,405,219.54/143,711.90
  6. Step 6: Final answer
    x = 194,572.65

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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.