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Finding the Fourth Proportional to 101,335.68, 139,893.12 and 63,630.72

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Solution

The fourth proportional to 101,335.68, 139,893.12 and 63,630.72 is: 87,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,335.68 : 139,893.12 = 63,630.72 : x
  2. Step 2: Convert to fraction form
    101,335.68/139,893.12 = 63,630.72/x
  3. Step 3: Cross multiply
    101,335.68x = 139,893.12 × 63,630.72
  4. Step 4: Simplify right side
    101,335.68x = 8,901,499,948.65
  5. Step 5: Solve for x
    x = 8,901,499,948.65/101,335.68
  6. Step 6: Final answer
    x = 87,841.72

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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.