Home / 154,327.27-212,979.92-86,340.21

Finding the Fourth Proportional to 154,327.27, 212,979.92 and 86,340.21

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Solution

The fourth proportional to 154,327.27, 212,979.92 and 86,340.21 is: 119,154.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,327.27 : 212,979.92 = 86,340.21 : x
  2. Step 2: Convert to fraction form
    154,327.27/212,979.92 = 86,340.21/x
  3. Step 3: Cross multiply
    154,327.27x = 212,979.92 × 86,340.21
  4. Step 4: Simplify right side
    154,327.27x = 18,388,731,018.58
  5. Step 5: Solve for x
    x = 18,388,731,018.58/154,327.27
  6. Step 6: Final answer
    x = 119,154.13

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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.