Home / 103,126.08-142,382.52-79,209.96

Finding the Fourth Proportional to 103,126.08, 142,382.52 and 79,209.96

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Solution

The fourth proportional to 103,126.08, 142,382.52 and 79,209.96 is: 109,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,126.08 : 142,382.52 = 79,209.96 : x
  2. Step 2: Convert to fraction form
    103,126.08/142,382.52 = 79,209.96/x
  3. Step 3: Cross multiply
    103,126.08x = 142,382.52 × 79,209.96
  4. Step 4: Simplify right side
    103,126.08x = 11,278,113,713.90
  5. Step 5: Solve for x
    x = 11,278,113,713.90/103,126.08
  6. Step 6: Final answer
    x = 109,362.38

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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.