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Finding the Fourth Proportional to 159,916.29, 220,687.91 and 88,300.81

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Solution

The fourth proportional to 159,916.29, 220,687.91 and 88,300.81 is: 121,857.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,916.29 : 220,687.91 = 88,300.81 : x
  2. Step 2: Convert to fraction form
    159,916.29/220,687.91 = 88,300.81/x
  3. Step 3: Cross multiply
    159,916.29x = 220,687.91 × 88,300.81
  4. Step 4: Simplify right side
    159,916.29x = 19,486,921,210.21
  5. Step 5: Solve for x
    x = 19,486,921,210.21/159,916.29
  6. Step 6: Final answer
    x = 121,857.01

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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.