Home / 68,182.40-102,279.52-20,808.16

Finding the Fourth Proportional to 68,182.40, 102,279.52 and 20,808.16

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Solution

The fourth proportional to 68,182.40, 102,279.52 and 20,808.16 is: 31,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,182.40 : 102,279.52 = 20,808.16 : x
  2. Step 2: Convert to fraction form
    68,182.40/102,279.52 = 20,808.16/x
  3. Step 3: Cross multiply
    68,182.40x = 102,279.52 × 20,808.16
  4. Step 4: Simplify right side
    68,182.40x = 2,128,248,616.88
  5. Step 5: Solve for x
    x = 2,128,248,616.88/68,182.40
  6. Step 6: Final answer
    x = 31,214.05

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1.5x scale

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.