Home / 121,005.10-181,702.05-91,456.30

Finding the Fourth Proportional to 121,005.10, 181,702.05 and 91,456.30

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Solution

The fourth proportional to 121,005.10, 181,702.05 and 91,456.30 is: 137,331.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.10 : 181,702.05 = 91,456.30 : x
  2. Step 2: Convert to fraction form
    121,005.10/181,702.05 = 91,456.30/x
  3. Step 3: Cross multiply
    121,005.10x = 181,702.05 × 91,456.30
  4. Step 4: Simplify right side
    121,005.10x = 16,617,797,195.42
  5. Step 5: Solve for x
    x = 16,617,797,195.42/121,005.10
  6. Step 6: Final answer
    x = 137,331.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.