Home / 154,275.90-212,920.46-86,296.65

Finding the Fourth Proportional to 154,275.90, 212,920.46 and 86,296.65

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Solution

The fourth proportional to 154,275.90, 212,920.46 and 86,296.65 is: 119,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,275.90 : 212,920.46 = 86,296.65 : x
  2. Step 2: Convert to fraction form
    154,275.90/212,920.46 = 86,296.65/x
  3. Step 3: Cross multiply
    154,275.90x = 212,920.46 × 86,296.65
  4. Step 4: Simplify right side
    154,275.90x = 18,374,322,414.46
  5. Step 5: Solve for x
    x = 18,374,322,414.46/154,275.90
  6. Step 6: Final answer
    x = 119,100.41

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1.5x scale

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.