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Finding the Fourth Proportional to 159,029.88, 219,462.92 and 86,432.76

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Solution

The fourth proportional to 159,029.88, 219,462.92 and 86,432.76 is: 119,278.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,029.88 : 219,462.92 = 86,432.76 : x
  2. Step 2: Convert to fraction form
    159,029.88/219,462.92 = 86,432.76/x
  3. Step 3: Cross multiply
    159,029.88x = 219,462.92 × 86,432.76
  4. Step 4: Simplify right side
    159,029.88x = 18,968,785,461.10
  5. Step 5: Solve for x
    x = 18,968,785,461.10/159,029.88
  6. Step 6: Final answer
    x = 119,278.12

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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.