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Finding the Fourth Proportional to 121,498.80, 181,920.15 and 121,498.80

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Solution

The fourth proportional to 121,498.80, 181,920.15 and 121,498.80 is: 181,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,498.80 : 181,920.15 = 121,498.80 : x
  2. Step 2: Convert to fraction form
    121,498.80/181,920.15 = 121,498.80/x
  3. Step 3: Cross multiply
    121,498.80x = 181,920.15 × 121,498.80
  4. Step 4: Simplify right side
    121,498.80x = 22,103,079,920.82
  5. Step 5: Solve for x
    x = 22,103,079,920.82/121,498.80
  6. Step 6: Final answer
    x = 181,920.15

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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.