Home / 115,421.28-159,281.52-65,124.96

Finding the Fourth Proportional to 115,421.28, 159,281.52 and 65,124.96

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Solution

The fourth proportional to 115,421.28, 159,281.52 and 65,124.96 is: 89,872.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,421.28 : 159,281.52 = 65,124.96 : x
  2. Step 2: Convert to fraction form
    115,421.28/159,281.52 = 65,124.96/x
  3. Step 3: Cross multiply
    115,421.28x = 159,281.52 × 65,124.96
  4. Step 4: Simplify right side
    115,421.28x = 10,373,202,618.74
  5. Step 5: Solve for x
    x = 10,373,202,618.74/115,421.28
  6. Step 6: Final answer
    x = 89,872.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.