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Finding the Fourth Proportional to 121,207.56, 181,813.20 and 38,101.56

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Solution

The fourth proportional to 121,207.56, 181,813.20 and 38,101.56 is: 57,152.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,207.56 : 181,813.20 = 38,101.56 : x
  2. Step 2: Convert to fraction form
    121,207.56/181,813.20 = 38,101.56/x
  3. Step 3: Cross multiply
    121,207.56x = 181,813.20 × 38,101.56
  4. Step 4: Simplify right side
    121,207.56x = 6,927,366,548.59
  5. Step 5: Solve for x
    x = 6,927,366,548.59/121,207.56
  6. Step 6: Final answer
    x = 57,152.92

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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.