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Finding the Fourth Proportional to 157,995.68, 218,032.56 and 86,375.48

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Solution

The fourth proportional to 157,995.68, 218,032.56 and 86,375.48 is: 119,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,995.68 : 218,032.56 = 86,375.48 : x
  2. Step 2: Convert to fraction form
    157,995.68/218,032.56 = 86,375.48/x
  3. Step 3: Cross multiply
    157,995.68x = 218,032.56 × 86,375.48
  4. Step 4: Simplify right side
    157,995.68x = 18,832,665,935.47
  5. Step 5: Solve for x
    x = 18,832,665,935.47/157,995.68
  6. Step 6: Final answer
    x = 119,197.35

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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.