Home / 123,289.26-170,155.35-91,548.78

Finding the Fourth Proportional to 123,289.26, 170,155.35 and 91,548.78

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Solution

The fourth proportional to 123,289.26, 170,155.35 and 91,548.78 is: 126,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,289.26 : 170,155.35 = 91,548.78 : x
  2. Step 2: Convert to fraction form
    123,289.26/170,155.35 = 91,548.78/x
  3. Step 3: Cross multiply
    123,289.26x = 170,155.35 × 91,548.78
  4. Step 4: Simplify right side
    123,289.26x = 15,577,514,702.97
  5. Step 5: Solve for x
    x = 15,577,514,702.97/123,289.26
  6. Step 6: Final answer
    x = 126,349.32

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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.