Home / 92,213.20-138,210.45-82,809.10

Finding the Fourth Proportional to 92,213.20, 138,210.45 and 82,809.10

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Solution

The fourth proportional to 92,213.20, 138,210.45 and 82,809.10 is: 124,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,213.20 : 138,210.45 = 82,809.10 : x
  2. Step 2: Convert to fraction form
    92,213.20/138,210.45 = 82,809.10/x
  3. Step 3: Cross multiply
    92,213.20x = 138,210.45 × 82,809.10
  4. Step 4: Simplify right side
    92,213.20x = 11,445,082,975.10
  5. Step 5: Solve for x
    x = 11,445,082,975.10/92,213.20
  6. Step 6: Final answer
    x = 124,115.45

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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.