Home / 121,514.70-182,272.05-91,990.20

Finding the Fourth Proportional to 121,514.70, 182,272.05 and 91,990.20

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Solution

The fourth proportional to 121,514.70, 182,272.05 and 91,990.20 is: 137,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,514.70 : 182,272.05 = 91,990.20 : x
  2. Step 2: Convert to fraction form
    121,514.70/182,272.05 = 91,990.20/x
  3. Step 3: Cross multiply
    121,514.70x = 182,272.05 × 91,990.20
  4. Step 4: Simplify right side
    121,514.70x = 16,767,242,333.91
  5. Step 5: Solve for x
    x = 16,767,242,333.91/121,514.70
  6. Step 6: Final answer
    x = 137,985.30

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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.