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Finding the Fourth Proportional to 158,357.99, 218,531.33 and 85,760.29

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Solution

The fourth proportional to 158,357.99, 218,531.33 and 85,760.29 is: 118,347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,357.99 : 218,531.33 = 85,760.29 : x
  2. Step 2: Convert to fraction form
    158,357.99/218,531.33 = 85,760.29/x
  3. Step 3: Cross multiply
    158,357.99x = 218,531.33 × 85,760.29
  4. Step 4: Simplify right side
    158,357.99x = 18,741,310,649.80
  5. Step 5: Solve for x
    x = 18,741,310,649.80/158,357.99
  6. Step 6: Final answer
    x = 118,347.74

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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.