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Finding the Fourth Proportional to 121,343.61, 182,097.41 and 42,458.52

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Solution

The fourth proportional to 121,343.61, 182,097.41 and 42,458.52 is: 63,716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,343.61 : 182,097.41 = 42,458.52 : x
  2. Step 2: Convert to fraction form
    121,343.61/182,097.41 = 42,458.52/x
  3. Step 3: Cross multiply
    121,343.61x = 182,097.41 × 42,458.52
  4. Step 4: Simplify right side
    121,343.61x = 7,731,585,401.65
  5. Step 5: Solve for x
    x = 7,731,585,401.65/121,343.61
  6. Step 6: Final answer
    x = 63,716.46

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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.