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Finding the Fourth Proportional to 157,957.44, 217,918.88 and 90,853.44

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Solution

The fourth proportional to 157,957.44, 217,918.88 and 90,853.44 is: 125,341.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,957.44 : 217,918.88 = 90,853.44 : x
  2. Step 2: Convert to fraction form
    157,957.44/217,918.88 = 90,853.44/x
  3. Step 3: Cross multiply
    157,957.44x = 217,918.88 × 90,853.44
  4. Step 4: Simplify right side
    157,957.44x = 19,798,679,888.95
  5. Step 5: Solve for x
    x = 19,798,679,888.95/157,957.44
  6. Step 6: Final answer
    x = 125,341.86

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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.