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Finding the Fourth Proportional to 143,332.60, 214,998.90 and 72,473.80

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Solution

The fourth proportional to 143,332.60, 214,998.90 and 72,473.80 is: 108,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,332.60 : 214,998.90 = 72,473.80 : x
  2. Step 2: Convert to fraction form
    143,332.60/214,998.90 = 72,473.80/x
  3. Step 3: Cross multiply
    143,332.60x = 214,998.90 × 72,473.80
  4. Step 4: Simplify right side
    143,332.60x = 15,581,787,278.82
  5. Step 5: Solve for x
    x = 15,581,787,278.82/143,332.60
  6. Step 6: Final answer
    x = 108,710.70

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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.