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Finding the Fourth Proportional to 153,869.20, 230,386.74 and 79,841.68

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Solution

The fourth proportional to 153,869.20, 230,386.74 and 79,841.68 is: 119,546.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,869.20 : 230,386.74 = 79,841.68 : x
  2. Step 2: Convert to fraction form
    153,869.20/230,386.74 = 79,841.68/x
  3. Step 3: Cross multiply
    153,869.20x = 230,386.74 × 79,841.68
  4. Step 4: Simplify right side
    153,869.20x = 18,394,464,371.32
  5. Step 5: Solve for x
    x = 18,394,464,371.32/153,869.20
  6. Step 6: Final answer
    x = 119,546.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.