Home / 143,301.20-215,124.60-142,264.40

Finding the Fourth Proportional to 143,301.20, 215,124.60 and 142,264.40

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Solution

The fourth proportional to 143,301.20, 215,124.60 and 142,264.40 is: 213,568.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,301.20 : 215,124.60 = 142,264.40 : x
  2. Step 2: Convert to fraction form
    143,301.20/215,124.60 = 142,264.40/x
  3. Step 3: Cross multiply
    143,301.20x = 215,124.60 × 142,264.40
  4. Step 4: Simplify right side
    143,301.20x = 30,604,572,144.24
  5. Step 5: Solve for x
    x = 30,604,572,144.24/143,301.20
  6. Step 6: Final answer
    x = 213,568.15

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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.