Home / 126,911.89-175,116.20-72,439.19

Finding the Fourth Proportional to 126,911.89, 175,116.20 and 72,439.19

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Solution

The fourth proportional to 126,911.89, 175,116.20 and 72,439.19 is: 99,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,911.89 : 175,116.20 = 72,439.19 : x
  2. Step 2: Convert to fraction form
    126,911.89/175,116.20 = 72,439.19/x
  3. Step 3: Cross multiply
    126,911.89x = 175,116.20 × 72,439.19
  4. Step 4: Simplify right side
    126,911.89x = 12,685,274,989.40
  5. Step 5: Solve for x
    x = 12,685,274,989.40/126,911.89
  6. Step 6: Final answer
    x = 99,953.40

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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.