Home / 121,491.20-182,236.80-38,385.20

Finding the Fourth Proportional to 121,491.20, 182,236.80 and 38,385.20

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Solution

The fourth proportional to 121,491.20, 182,236.80 and 38,385.20 is: 57,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,491.20 : 182,236.80 = 38,385.20 : x
  2. Step 2: Convert to fraction form
    121,491.20/182,236.80 = 38,385.20/x
  3. Step 3: Cross multiply
    121,491.20x = 182,236.80 × 38,385.20
  4. Step 4: Simplify right side
    121,491.20x = 6,995,196,015.36
  5. Step 5: Solve for x
    x = 6,995,196,015.36/121,491.20
  6. Step 6: Final answer
    x = 57,577.80

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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.