Home / 145,112.80-217,591.20-51,606.40

Finding the Fourth Proportional to 145,112.80, 217,591.20 and 51,606.40

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Solution

The fourth proportional to 145,112.80, 217,591.20 and 51,606.40 is: 77,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,112.80 : 217,591.20 = 51,606.40 : x
  2. Step 2: Convert to fraction form
    145,112.80/217,591.20 = 51,606.40/x
  3. Step 3: Cross multiply
    145,112.80x = 217,591.20 × 51,606.40
  4. Step 4: Simplify right side
    145,112.80x = 11,229,098,503.68
  5. Step 5: Solve for x
    x = 11,229,098,503.68/145,112.80
  6. Step 6: Final answer
    x = 77,381.86

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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.