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Finding the Fourth Proportional to 157,359.03, 217,155.33 and 85,739.64

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Solution

The fourth proportional to 157,359.03, 217,155.33 and 85,739.64 is: 118,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,359.03 : 217,155.33 = 85,739.64 : x
  2. Step 2: Convert to fraction form
    157,359.03/217,155.33 = 85,739.64/x
  3. Step 3: Cross multiply
    157,359.03x = 217,155.33 × 85,739.64
  4. Step 4: Simplify right side
    157,359.03x = 18,618,819,818.28
  5. Step 5: Solve for x
    x = 18,618,819,818.28/157,359.03
  6. Step 6: Final answer
    x = 118,320.63

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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.