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Finding the Fourth Proportional to 157,017.87, 216,635.79 and 89,029.52

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Solution

The fourth proportional to 157,017.87, 216,635.79 and 89,029.52 is: 122,833.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,017.87 : 216,635.79 = 89,029.52 : x
  2. Step 2: Convert to fraction form
    157,017.87/216,635.79 = 89,029.52/x
  3. Step 3: Cross multiply
    157,017.87x = 216,635.79 × 89,029.52
  4. Step 4: Simplify right side
    157,017.87x = 19,286,979,315.34
  5. Step 5: Solve for x
    x = 19,286,979,315.34/157,017.87
  6. Step 6: Final answer
    x = 122,833.02

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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.