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Finding the Fourth Proportional to 157,367.40, 217,169.46 and 85,747.48

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Solution

The fourth proportional to 157,367.40, 217,169.46 and 85,747.48 is: 118,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,367.40 : 217,169.46 = 85,747.48 : x
  2. Step 2: Convert to fraction form
    157,367.40/217,169.46 = 85,747.48/x
  3. Step 3: Cross multiply
    157,367.40x = 217,169.46 × 85,747.48
  4. Step 4: Simplify right side
    157,367.40x = 18,621,733,927.96
  5. Step 5: Solve for x
    x = 18,621,733,927.96/157,367.40
  6. Step 6: Final answer
    x = 118,332.86

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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.