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Finding the Fourth Proportional to 104,405.76, 155,869.92 and 88,663.68

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Solution

The fourth proportional to 104,405.76, 155,869.92 and 88,663.68 is: 132,368.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,405.76 : 155,869.92 = 88,663.68 : x
  2. Step 2: Convert to fraction form
    104,405.76/155,869.92 = 88,663.68/x
  3. Step 3: Cross multiply
    104,405.76x = 155,869.92 × 88,663.68
  4. Step 4: Simplify right side
    104,405.76x = 13,820,000,708.51
  5. Step 5: Solve for x
    x = 13,820,000,708.51/104,405.76
  6. Step 6: Final answer
    x = 132,368.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.