Home / 126,312.28-189,413.30-67,133.72

Finding the Fourth Proportional to 126,312.28, 189,413.30 and 67,133.72

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Solution

The fourth proportional to 126,312.28, 189,413.30 and 67,133.72 is: 100,671.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,312.28 : 189,413.30 = 67,133.72 : x
  2. Step 2: Convert to fraction form
    126,312.28/189,413.30 = 67,133.72/x
  3. Step 3: Cross multiply
    126,312.28x = 189,413.30 × 67,133.72
  4. Step 4: Simplify right side
    126,312.28x = 12,716,019,446.48
  5. Step 5: Solve for x
    x = 12,716,019,446.48/126,312.28
  6. Step 6: Final answer
    x = 100,671.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.