Home / 113,540.28-156,690.40-63,239.28

Finding the Fourth Proportional to 113,540.28, 156,690.40 and 63,239.28

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Solution

The fourth proportional to 113,540.28, 156,690.40 and 63,239.28 is: 87,272.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,540.28 : 156,690.40 = 63,239.28 : x
  2. Step 2: Convert to fraction form
    113,540.28/156,690.40 = 63,239.28/x
  3. Step 3: Cross multiply
    113,540.28x = 156,690.40 × 63,239.28
  4. Step 4: Simplify right side
    113,540.28x = 9,908,988,078.91
  5. Step 5: Solve for x
    x = 9,908,988,078.91/113,540.28
  6. Step 6: Final answer
    x = 87,272.89

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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.