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Finding the Fourth Proportional to 159,320.46, 219,862.19 and 87,700.13

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Solution

The fourth proportional to 159,320.46, 219,862.19 and 87,700.13 is: 121,026.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,320.46 : 219,862.19 = 87,700.13 : x
  2. Step 2: Convert to fraction form
    159,320.46/219,862.19 = 87,700.13/x
  3. Step 3: Cross multiply
    159,320.46x = 219,862.19 × 87,700.13
  4. Step 4: Simplify right side
    159,320.46x = 19,281,941,765.02
  5. Step 5: Solve for x
    x = 19,281,941,765.02/159,320.46
  6. Step 6: Final answer
    x = 121,026.15

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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.