Home / 121,518.70-182,278.05-91,994.20

Finding the Fourth Proportional to 121,518.70, 182,278.05 and 91,994.20

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Solution

The fourth proportional to 121,518.70, 182,278.05 and 91,994.20 is: 137,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,518.70 : 182,278.05 = 91,994.20 : x
  2. Step 2: Convert to fraction form
    121,518.70/182,278.05 = 91,994.20/x
  3. Step 3: Cross multiply
    121,518.70x = 182,278.05 × 91,994.20
  4. Step 4: Simplify right side
    121,518.70x = 16,768,523,387.31
  5. Step 5: Solve for x
    x = 16,768,523,387.31/121,518.70
  6. Step 6: Final answer
    x = 137,991.30

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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.