Home / 121,441.57-182,017-85,849.05

Finding the Fourth Proportional to 121,441.57, 182,017 and 85,849.05

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Solution

The fourth proportional to 121,441.57, 182,017 and 85,849.05 is: 128,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,441.57 : 182,017 = 85,849.05 : x
  2. Step 2: Convert to fraction form
    121,441.57/182,017 = 85,849.05/x
  3. Step 3: Cross multiply
    121,441.57x = 182,017 × 85,849.05
  4. Step 4: Simplify right side
    121,441.57x = 15,625,986,533.85
  5. Step 5: Solve for x
    x = 15,625,986,533.85/121,441.57
  6. Step 6: Final answer
    x = 128,670.82

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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.