Home / 154,431.22-213,115.17-86,448.33

Finding the Fourth Proportional to 154,431.22, 213,115.17 and 86,448.33

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Solution

The fourth proportional to 154,431.22, 213,115.17 and 86,448.33 is: 119,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,431.22 : 213,115.17 = 86,448.33 : x
  2. Step 2: Convert to fraction form
    154,431.22/213,115.17 = 86,448.33/x
  3. Step 3: Cross multiply
    154,431.22x = 213,115.17 × 86,448.33
  4. Step 4: Simplify right side
    154,431.22x = 18,423,449,744.98
  5. Step 5: Solve for x
    x = 18,423,449,744.98/154,431.22
  6. Step 6: Final answer
    x = 119,298.74

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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.