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Finding the Fourth Proportional to 212,124.60, 292,732.56 and 121,482

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Solution

The fourth proportional to 212,124.60, 292,732.56 and 121,482 is: 167,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,124.60 : 292,732.56 = 121,482 : x
  2. Step 2: Convert to fraction form
    212,124.60/292,732.56 = 121,482/x
  3. Step 3: Cross multiply
    212,124.60x = 292,732.56 × 121,482
  4. Step 4: Simplify right side
    212,124.60x = 35,561,736,853.92
  5. Step 5: Solve for x
    x = 35,561,736,853.92/212,124.60
  6. Step 6: Final answer
    x = 167,645.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.