Home / 135,521.52-187,037.28-81,836.88

Finding the Fourth Proportional to 135,521.52, 187,037.28 and 81,836.88

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Solution

The fourth proportional to 135,521.52, 187,037.28 and 81,836.88 is: 112,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,521.52 : 187,037.28 = 81,836.88 : x
  2. Step 2: Convert to fraction form
    135,521.52/187,037.28 = 81,836.88/x
  3. Step 3: Cross multiply
    135,521.52x = 187,037.28 × 81,836.88
  4. Step 4: Simplify right side
    135,521.52x = 15,306,547,438.89
  5. Step 5: Solve for x
    x = 15,306,547,438.89/135,521.52
  6. Step 6: Final answer
    x = 112,945.51

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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.