Home / 121,331.40-181,997.10-108,646.80

Finding the Fourth Proportional to 121,331.40, 181,997.10 and 108,646.80

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Solution

The fourth proportional to 121,331.40, 181,997.10 and 108,646.80 is: 162,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,331.40 : 181,997.10 = 108,646.80 : x
  2. Step 2: Convert to fraction form
    121,331.40/181,997.10 = 108,646.80/x
  3. Step 3: Cross multiply
    121,331.40x = 181,997.10 × 108,646.80
  4. Step 4: Simplify right side
    121,331.40x = 19,773,402,524.28
  5. Step 5: Solve for x
    x = 19,773,402,524.28/121,331.40
  6. Step 6: Final answer
    x = 162,970.20

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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.