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Finding the Fourth Proportional to 143,553.75, 215,332.55 and 45,057.75

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Solution

The fourth proportional to 143,553.75, 215,332.55 and 45,057.75 is: 67,587.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,553.75 : 215,332.55 = 45,057.75 : x
  2. Step 2: Convert to fraction form
    143,553.75/215,332.55 = 45,057.75/x
  3. Step 3: Cross multiply
    143,553.75x = 215,332.55 × 45,057.75
  4. Step 4: Simplify right side
    143,553.75x = 9,702,399,979.47
  5. Step 5: Solve for x
    x = 9,702,399,979.47/143,553.75
  6. Step 6: Final answer
    x = 67,587.23

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1.5x scale

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.