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Finding the Fourth Proportional to 159,918.30, 220,690.68 and 88,302.81

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Solution

The fourth proportional to 159,918.30, 220,690.68 and 88,302.81 is: 121,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,918.30 : 220,690.68 = 88,302.81 : x
  2. Step 2: Convert to fraction form
    159,918.30/220,690.68 = 88,302.81/x
  3. Step 3: Cross multiply
    159,918.30x = 220,690.68 × 88,302.81
  4. Step 4: Simplify right side
    159,918.30x = 19,487,607,184.81
  5. Step 5: Solve for x
    x = 19,487,607,184.81/159,918.30
  6. Step 6: Final answer
    x = 121,859.77

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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.