Home / 126,408.40-174,443.16-72,690.88

Finding the Fourth Proportional to 126,408.40, 174,443.16 and 72,690.88

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Solution

The fourth proportional to 126,408.40, 174,443.16 and 72,690.88 is: 100,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,408.40 : 174,443.16 = 72,690.88 : x
  2. Step 2: Convert to fraction form
    126,408.40/174,443.16 = 72,690.88/x
  3. Step 3: Cross multiply
    126,408.40x = 174,443.16 × 72,690.88
  4. Step 4: Simplify right side
    126,408.40x = 12,680,426,810.38
  5. Step 5: Solve for x
    x = 12,680,426,810.38/126,408.40
  6. Step 6: Final answer
    x = 100,313.17

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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.