Home / 103,679.10-155,518.65-82,943.10

Finding the Fourth Proportional to 103,679.10, 155,518.65 and 82,943.10

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Solution

The fourth proportional to 103,679.10, 155,518.65 and 82,943.10 is: 124,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.10 : 155,518.65 = 82,943.10 : x
  2. Step 2: Convert to fraction form
    103,679.10/155,518.65 = 82,943.10/x
  3. Step 3: Cross multiply
    103,679.10x = 155,518.65 × 82,943.10
  4. Step 4: Simplify right side
    103,679.10x = 12,899,198,938.82
  5. Step 5: Solve for x
    x = 12,899,198,938.82/103,679.10
  6. Step 6: Final answer
    x = 124,414.65

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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.