Home / 103,198.52-142,305.82-76,397.24

Finding the Fourth Proportional to 103,198.52, 142,305.82 and 76,397.24

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Solution

The fourth proportional to 103,198.52, 142,305.82 and 76,397.24 is: 105,348.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,198.52 : 142,305.82 = 76,397.24 : x
  2. Step 2: Convert to fraction form
    103,198.52/142,305.82 = 76,397.24/x
  3. Step 3: Cross multiply
    103,198.52x = 142,305.82 × 76,397.24
  4. Step 4: Simplify right side
    103,198.52x = 10,871,771,883.94
  5. Step 5: Solve for x
    x = 10,871,771,883.94/103,198.52
  6. Step 6: Final answer
    x = 105,348.14

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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.