Home / 126,039.87-173,928.15-78,292.35

Finding the Fourth Proportional to 126,039.87, 173,928.15 and 78,292.35

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Solution

The fourth proportional to 126,039.87, 173,928.15 and 78,292.35 is: 108,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,039.87 : 173,928.15 = 78,292.35 : x
  2. Step 2: Convert to fraction form
    126,039.87/173,928.15 = 78,292.35/x
  3. Step 3: Cross multiply
    126,039.87x = 173,928.15 × 78,292.35
  4. Step 4: Simplify right side
    126,039.87x = 13,617,243,594.65
  5. Step 5: Solve for x
    x = 13,617,243,594.65/126,039.87
  6. Step 6: Final answer
    x = 108,039.18

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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.