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Finding the Fourth Proportional to 121,068.40, 181,537.80 and 50,868.40

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Solution

The fourth proportional to 121,068.40, 181,537.80 and 50,868.40 is: 76,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,068.40 : 181,537.80 = 50,868.40 : x
  2. Step 2: Convert to fraction form
    121,068.40/181,537.80 = 50,868.40/x
  3. Step 3: Cross multiply
    121,068.40x = 181,537.80 × 50,868.40
  4. Step 4: Simplify right side
    121,068.40x = 9,234,537,425.52
  5. Step 5: Solve for x
    x = 9,234,537,425.52/121,068.40
  6. Step 6: Final answer
    x = 76,275.37

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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.