Home / 91,573.67-126,247.59-78,287.64

Finding the Fourth Proportional to 91,573.67, 126,247.59 and 78,287.64

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Solution

The fourth proportional to 91,573.67, 126,247.59 and 78,287.64 is: 107,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,573.67 : 126,247.59 = 78,287.64 : x
  2. Step 2: Convert to fraction form
    91,573.67/126,247.59 = 78,287.64/x
  3. Step 3: Cross multiply
    91,573.67x = 126,247.59 × 78,287.64
  4. Step 4: Simplify right side
    91,573.67x = 9,883,625,876.79
  5. Step 5: Solve for x
    x = 9,883,625,876.79/91,573.67
  6. Step 6: Final answer
    x = 107,930.88

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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.