Home / 129,605.34-178,859.16-75,885.33

Finding the Fourth Proportional to 129,605.34, 178,859.16 and 75,885.33

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Solution

The fourth proportional to 129,605.34, 178,859.16 and 75,885.33 is: 104,723.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,605.34 : 178,859.16 = 75,885.33 : x
  2. Step 2: Convert to fraction form
    129,605.34/178,859.16 = 75,885.33/x
  3. Step 3: Cross multiply
    129,605.34x = 178,859.16 × 75,885.33
  4. Step 4: Simplify right side
    129,605.34x = 13,572,786,380.12
  5. Step 5: Solve for x
    x = 13,572,786,380.12/129,605.34
  6. Step 6: Final answer
    x = 104,723.97

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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.