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Finding the Fourth Proportional to 113,379.60, 169,961.40 and 42,283.20

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Solution

The fourth proportional to 113,379.60, 169,961.40 and 42,283.20 is: 63,384.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,379.60 : 169,961.40 = 42,283.20 : x
  2. Step 2: Convert to fraction form
    113,379.60/169,961.40 = 42,283.20/x
  3. Step 3: Cross multiply
    113,379.60x = 169,961.40 × 42,283.20
  4. Step 4: Simplify right side
    113,379.60x = 7,186,511,868.48
  5. Step 5: Solve for x
    x = 7,186,511,868.48/113,379.60
  6. Step 6: Final answer
    x = 63,384.52

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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.