Home / 126,045.34-173,934.75-72,334.78

Finding the Fourth Proportional to 126,045.34, 173,934.75 and 72,334.78

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Solution

The fourth proportional to 126,045.34, 173,934.75 and 72,334.78 is: 99,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,045.34 : 173,934.75 = 72,334.78 : x
  2. Step 2: Convert to fraction form
    126,045.34/173,934.75 = 72,334.78/x
  3. Step 3: Cross multiply
    126,045.34x = 173,934.75 × 72,334.78
  4. Step 4: Simplify right side
    126,045.34x = 12,581,531,875.61
  5. Step 5: Solve for x
    x = 12,581,531,875.61/126,045.34
  6. Step 6: Final answer
    x = 99,817.51

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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.