Home / 143,932.40-215,623.20-77,350.40

Finding the Fourth Proportional to 143,932.40, 215,623.20 and 77,350.40

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Solution

The fourth proportional to 143,932.40, 215,623.20 and 77,350.40 is: 115,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,932.40 : 215,623.20 = 77,350.40 : x
  2. Step 2: Convert to fraction form
    143,932.40/215,623.20 = 77,350.40/x
  3. Step 3: Cross multiply
    143,932.40x = 215,623.20 × 77,350.40
  4. Step 4: Simplify right side
    143,932.40x = 16,678,540,769.28
  5. Step 5: Solve for x
    x = 16,678,540,769.28/143,932.40
  6. Step 6: Final answer
    x = 115,877.60

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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.