Home / 115,657.12-159,589.20-65,337.76

Finding the Fourth Proportional to 115,657.12, 159,589.20 and 65,337.76

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Solution

The fourth proportional to 115,657.12, 159,589.20 and 65,337.76 is: 90,156.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,657.12 : 159,589.20 = 65,337.76 : x
  2. Step 2: Convert to fraction form
    115,657.12/159,589.20 = 65,337.76/x
  3. Step 3: Cross multiply
    115,657.12x = 159,589.20 × 65,337.76
  4. Step 4: Simplify right side
    115,657.12x = 10,427,200,848.19
  5. Step 5: Solve for x
    x = 10,427,200,848.19/115,657.12
  6. Step 6: Final answer
    x = 90,156.15

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1.5x scale

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.