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Finding the Fourth Proportional to 121,190.40, 181,868.67 and 42,304.68

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Solution

The fourth proportional to 121,190.40, 181,868.67 and 42,304.68 is: 63,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,190.40 : 181,868.67 = 42,304.68 : x
  2. Step 2: Convert to fraction form
    121,190.40/181,868.67 = 42,304.68/x
  3. Step 3: Cross multiply
    121,190.40x = 181,868.67 × 42,304.68
  4. Step 4: Simplify right side
    121,190.40x = 7,693,895,886.38
  5. Step 5: Solve for x
    x = 7,693,895,886.38/121,190.40
  6. Step 6: Final answer
    x = 63,486.02

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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.