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Finding the Fourth Proportional to 100,527.17, 138,734.57 and 66,476.48

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Solution

The fourth proportional to 100,527.17, 138,734.57 and 66,476.48 is: 91,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,527.17 : 138,734.57 = 66,476.48 : x
  2. Step 2: Convert to fraction form
    100,527.17/138,734.57 = 66,476.48/x
  3. Step 3: Cross multiply
    100,527.17x = 138,734.57 × 66,476.48
  4. Step 4: Simplify right side
    100,527.17x = 9,222,585,340.43
  5. Step 5: Solve for x
    x = 9,222,585,340.43/100,527.17
  6. Step 6: Final answer
    x = 91,742.22

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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.