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Finding the Fourth Proportional to 121,036.40, 181,489.80 and 50,836.40

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Solution

The fourth proportional to 121,036.40, 181,489.80 and 50,836.40 is: 76,227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,036.40 : 181,489.80 = 50,836.40 : x
  2. Step 2: Convert to fraction form
    121,036.40/181,489.80 = 50,836.40/x
  3. Step 3: Cross multiply
    121,036.40x = 181,489.80 × 50,836.40
  4. Step 4: Simplify right side
    121,036.40x = 9,226,288,068.72
  5. Step 5: Solve for x
    x = 9,226,288,068.72/121,036.40
  6. Step 6: Final answer
    x = 76,227.38

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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.