Home / 121,145.12-181,747.92-42,260

Finding the Fourth Proportional to 121,145.12, 181,747.92 and 42,260

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Solution

The fourth proportional to 121,145.12, 181,747.92 and 42,260 is: 63,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,145.12 : 181,747.92 = 42,260 : x
  2. Step 2: Convert to fraction form
    121,145.12/181,747.92 = 42,260/x
  3. Step 3: Cross multiply
    121,145.12x = 181,747.92 × 42,260
  4. Step 4: Simplify right side
    121,145.12x = 7,680,667,099.20
  5. Step 5: Solve for x
    x = 7,680,667,099.20/121,145.12
  6. Step 6: Final answer
    x = 63,400.55

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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.