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Finding the Fourth Proportional to 121,159.89, 181,768.59 and 38,053.89

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Solution

The fourth proportional to 121,159.89, 181,768.59 and 38,053.89 is: 57,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,159.89 : 181,768.59 = 38,053.89 : x
  2. Step 2: Convert to fraction form
    121,159.89/181,768.59 = 38,053.89/x
  3. Step 3: Cross multiply
    121,159.89x = 181,768.59 × 38,053.89
  4. Step 4: Simplify right side
    121,159.89x = 6,917,001,929.32
  5. Step 5: Solve for x
    x = 6,917,001,929.32/121,159.89
  6. Step 6: Final answer
    x = 57,089.87

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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.