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Finding the Fourth Proportional to 157,443.20, 217,266.24 and 85,822.08

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Solution

The fourth proportional to 157,443.20, 217,266.24 and 85,822.08 is: 118,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,443.20 : 217,266.24 = 85,822.08 : x
  2. Step 2: Convert to fraction form
    157,443.20/217,266.24 = 85,822.08/x
  3. Step 3: Cross multiply
    157,443.20x = 217,266.24 × 85,822.08
  4. Step 4: Simplify right side
    157,443.20x = 18,646,240,630.58
  5. Step 5: Solve for x
    x = 18,646,240,630.58/157,443.20
  6. Step 6: Final answer
    x = 118,431.54

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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.