Home / 121,146.12-181,749.42-42,261

Finding the Fourth Proportional to 121,146.12, 181,749.42 and 42,261

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Solution

The fourth proportional to 121,146.12, 181,749.42 and 42,261 is: 63,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.12 : 181,749.42 = 42,261 : x
  2. Step 2: Convert to fraction form
    121,146.12/181,749.42 = 42,261/x
  3. Step 3: Cross multiply
    121,146.12x = 181,749.42 × 42,261
  4. Step 4: Simplify right side
    121,146.12x = 7,680,912,238.62
  5. Step 5: Solve for x
    x = 7,680,912,238.62/121,146.12
  6. Step 6: Final answer
    x = 63,402.05

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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.