Home / 113,689.29-156,798.75-100,047.88

Finding the Fourth Proportional to 113,689.29, 156,798.75 and 100,047.88

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Solution

The fourth proportional to 113,689.29, 156,798.75 and 100,047.88 is: 137,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,689.29 : 156,798.75 = 100,047.88 : x
  2. Step 2: Convert to fraction form
    113,689.29/156,798.75 = 100,047.88/x
  3. Step 3: Cross multiply
    113,689.29x = 156,798.75 × 100,047.88
  4. Step 4: Simplify right side
    113,689.29x = 15,687,382,524.15
  5. Step 5: Solve for x
    x = 15,687,382,524.15/113,689.29
  6. Step 6: Final answer
    x = 137,984.70

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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.