Home / 212,934.60-319,445.97-86,574.85

Finding the Fourth Proportional to 212,934.60, 319,445.97 and 86,574.85

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Solution

The fourth proportional to 212,934.60, 319,445.97 and 86,574.85 is: 129,880.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,934.60 : 319,445.97 = 86,574.85 : x
  2. Step 2: Convert to fraction form
    212,934.60/319,445.97 = 86,574.85/x
  3. Step 3: Cross multiply
    212,934.60x = 319,445.97 × 86,574.85
  4. Step 4: Simplify right side
    212,934.60x = 27,655,986,935.85
  5. Step 5: Solve for x
    x = 27,655,986,935.85/212,934.60
  6. Step 6: Final answer
    x = 129,880.19

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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.