Home / 126,880.94-175,101.51-72,447.85

Finding the Fourth Proportional to 126,880.94, 175,101.51 and 72,447.85

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Solution

The fourth proportional to 126,880.94, 175,101.51 and 72,447.85 is: 99,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,880.94 : 175,101.51 = 72,447.85 : x
  2. Step 2: Convert to fraction form
    126,880.94/175,101.51 = 72,447.85/x
  3. Step 3: Cross multiply
    126,880.94x = 175,101.51 × 72,447.85
  4. Step 4: Simplify right side
    126,880.94x = 12,685,728,421.81
  5. Step 5: Solve for x
    x = 12,685,728,421.81/126,880.94
  6. Step 6: Final answer
    x = 99,981.35

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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.