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Finding the Fourth Proportional to 157,254.57, 217,020.42 and 118,422.88

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Solution

The fourth proportional to 157,254.57, 217,020.42 and 118,422.88 is: 163,430.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,254.57 : 217,020.42 = 118,422.88 : x
  2. Step 2: Convert to fraction form
    157,254.57/217,020.42 = 118,422.88/x
  3. Step 3: Cross multiply
    157,254.57x = 217,020.42 × 118,422.88
  4. Step 4: Simplify right side
    157,254.57x = 25,700,183,155.21
  5. Step 5: Solve for x
    x = 25,700,183,155.21/157,254.57
  6. Step 6: Final answer
    x = 163,430.44

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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.