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Finding the Fourth Proportional to 157,872.26, 217,863.60 and 89,885.72

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Solution

The fourth proportional to 157,872.26, 217,863.60 and 89,885.72 is: 124,042.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,872.26 : 217,863.60 = 89,885.72 : x
  2. Step 2: Convert to fraction form
    157,872.26/217,863.60 = 89,885.72/x
  3. Step 3: Cross multiply
    157,872.26x = 217,863.60 × 89,885.72
  4. Step 4: Simplify right side
    157,872.26x = 19,582,826,547.79
  5. Step 5: Solve for x
    x = 19,582,826,547.79/157,872.26
  6. Step 6: Final answer
    x = 124,042.23

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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.