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Finding the Fourth Proportional to 113,488.89, 156,615.08 and 63,187.89

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Solution

The fourth proportional to 113,488.89, 156,615.08 and 63,187.89 is: 87,199.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,488.89 : 156,615.08 = 63,187.89 : x
  2. Step 2: Convert to fraction form
    113,488.89/156,615.08 = 63,187.89/x
  3. Step 3: Cross multiply
    113,488.89x = 156,615.08 × 63,187.89
  4. Step 4: Simplify right side
    113,488.89x = 9,896,176,447.38
  5. Step 5: Solve for x
    x = 9,896,176,447.38/113,488.89
  6. Step 6: Final answer
    x = 87,199.52

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1.5x scale

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.