Home / 109,868.64-151,621.70-62,129.13

Finding the Fourth Proportional to 109,868.64, 151,621.70 and 62,129.13

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Solution

The fourth proportional to 109,868.64, 151,621.70 and 62,129.13 is: 85,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,868.64 : 151,621.70 = 62,129.13 : x
  2. Step 2: Convert to fraction form
    109,868.64/151,621.70 = 62,129.13/x
  3. Step 3: Cross multiply
    109,868.64x = 151,621.70 × 62,129.13
  4. Step 4: Simplify right side
    109,868.64x = 9,420,124,310.12
  5. Step 5: Solve for x
    x = 9,420,124,310.12/109,868.64
  6. Step 6: Final answer
    x = 85,739.88

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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.