Home / 156,235.20-215,617.84-88,264.64

Finding the Fourth Proportional to 156,235.20, 215,617.84 and 88,264.64

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Solution

The fourth proportional to 156,235.20, 215,617.84 and 88,264.64 is: 121,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,235.20 : 215,617.84 = 88,264.64 : x
  2. Step 2: Convert to fraction form
    156,235.20/215,617.84 = 88,264.64/x
  3. Step 3: Cross multiply
    156,235.20x = 215,617.84 × 88,264.64
  4. Step 4: Simplify right side
    156,235.20x = 19,031,431,840.05
  5. Step 5: Solve for x
    x = 19,031,431,840.05/156,235.20
  6. Step 6: Final answer
    x = 121,812.70

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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.