Home / 157,042.40-216,718.08-88,131.92

Finding the Fourth Proportional to 157,042.40, 216,718.08 and 88,131.92

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Solution

The fourth proportional to 157,042.40, 216,718.08 and 88,131.92 is: 121,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,042.40 : 216,718.08 = 88,131.92 : x
  2. Step 2: Convert to fraction form
    157,042.40/216,718.08 = 88,131.92/x
  3. Step 3: Cross multiply
    157,042.40x = 216,718.08 × 88,131.92
  4. Step 4: Simplify right side
    157,042.40x = 19,099,780,489.11
  5. Step 5: Solve for x
    x = 19,099,780,489.11/157,042.40
  6. Step 6: Final answer
    x = 121,621.81

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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.