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Finding the Fourth Proportional to 160,042.54, 220,856.11 and 87,443.88

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Solution

The fourth proportional to 160,042.54, 220,856.11 and 87,443.88 is: 120,671.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,042.54 : 220,856.11 = 87,443.88 : x
  2. Step 2: Convert to fraction form
    160,042.54/220,856.11 = 87,443.88/x
  3. Step 3: Cross multiply
    160,042.54x = 220,856.11 × 87,443.88
  4. Step 4: Simplify right side
    160,042.54x = 19,312,515,180.11
  5. Step 5: Solve for x
    x = 19,312,515,180.11/160,042.54
  6. Step 6: Final answer
    x = 120,671.14

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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.