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Finding the Fourth Proportional to 115,153.14, 158,911.68 and 66,764.48

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Solution

The fourth proportional to 115,153.14, 158,911.68 and 66,764.48 is: 92,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,153.14 : 158,911.68 = 66,764.48 : x
  2. Step 2: Convert to fraction form
    115,153.14/158,911.68 = 66,764.48/x
  3. Step 3: Cross multiply
    115,153.14x = 158,911.68 × 66,764.48
  4. Step 4: Simplify right side
    115,153.14x = 10,609,654,886.57
  5. Step 5: Solve for x
    x = 10,609,654,886.57/115,153.14
  6. Step 6: Final answer
    x = 92,135.18

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1.5x scale

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.