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Finding the Fourth Proportional to 121,119.52, 181,697.52 and 38,020

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Solution

The fourth proportional to 121,119.52, 181,697.52 and 38,020 is: 57,035.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119.52 : 181,697.52 = 38,020 : x
  2. Step 2: Convert to fraction form
    121,119.52/181,697.52 = 38,020/x
  3. Step 3: Cross multiply
    121,119.52x = 181,697.52 × 38,020
  4. Step 4: Simplify right side
    121,119.52x = 6,908,139,710.40
  5. Step 5: Solve for x
    x = 6,908,139,710.40/121,119.52
  6. Step 6: Final answer
    x = 57,035.73

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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.