Home / 157,531.16-217,270.13-100,947.80

Finding the Fourth Proportional to 157,531.16, 217,270.13 and 100,947.80

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Solution

The fourth proportional to 157,531.16, 217,270.13 and 100,947.80 is: 139,229.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,531.16 : 217,270.13 = 100,947.80 : x
  2. Step 2: Convert to fraction form
    157,531.16/217,270.13 = 100,947.80/x
  3. Step 3: Cross multiply
    157,531.16x = 217,270.13 × 100,947.80
  4. Step 4: Simplify right side
    157,531.16x = 21,932,941,629.21
  5. Step 5: Solve for x
    x = 21,932,941,629.21/157,531.16
  6. Step 6: Final answer
    x = 139,229.23

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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.