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Finding the Fourth Proportional to 157,255.57, 217,021.80 and 118,423.88

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Solution

The fourth proportional to 157,255.57, 217,021.80 and 118,423.88 is: 163,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,255.57 : 217,021.80 = 118,423.88 : x
  2. Step 2: Convert to fraction form
    157,255.57/217,021.80 = 118,423.88/x
  3. Step 3: Cross multiply
    157,255.57x = 217,021.80 × 118,423.88
  4. Step 4: Simplify right side
    157,255.57x = 25,700,563,600.58
  5. Step 5: Solve for x
    x = 25,700,563,600.58/157,255.57
  6. Step 6: Final answer
    x = 163,431.82

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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.