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Finding the Fourth Proportional to 150,343.76, 207,423.84 and 86,680.16

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Solution

The fourth proportional to 150,343.76, 207,423.84 and 86,680.16 is: 119,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,343.76 : 207,423.84 = 86,680.16 : x
  2. Step 2: Convert to fraction form
    150,343.76/207,423.84 = 86,680.16/x
  3. Step 3: Cross multiply
    150,343.76x = 207,423.84 × 86,680.16
  4. Step 4: Simplify right side
    150,343.76x = 17,979,531,639.01
  5. Step 5: Solve for x
    x = 17,979,531,639.01/150,343.76
  6. Step 6: Final answer
    x = 119,589.48

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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.