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Finding the Fourth Proportional to 115,068.98, 158,763.11 and 74,215.82

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Solution

The fourth proportional to 115,068.98, 158,763.11 and 74,215.82 is: 102,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,068.98 : 158,763.11 = 74,215.82 : x
  2. Step 2: Convert to fraction form
    115,068.98/158,763.11 = 74,215.82/x
  3. Step 3: Cross multiply
    115,068.98x = 158,763.11 × 74,215.82
  4. Step 4: Simplify right side
    115,068.98x = 11,782,734,394.40
  5. Step 5: Solve for x
    x = 11,782,734,394.40/115,068.98
  6. Step 6: Final answer
    x = 102,397.14

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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.