Home / 145,711.72-218,437.90-56,945.04

Finding the Fourth Proportional to 145,711.72, 218,437.90 and 56,945.04

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Solution

The fourth proportional to 145,711.72, 218,437.90 and 56,945.04 is: 85,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,711.72 : 218,437.90 = 56,945.04 : x
  2. Step 2: Convert to fraction form
    145,711.72/218,437.90 = 56,945.04/x
  3. Step 3: Cross multiply
    145,711.72x = 218,437.90 × 56,945.04
  4. Step 4: Simplify right side
    145,711.72x = 12,438,954,953.02
  5. Step 5: Solve for x
    x = 12,438,954,953.02/145,711.72
  6. Step 6: Final answer
    x = 85,366.88

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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.