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Finding the Fourth Proportional to 126,912.98, 175,117.71 and 72,440.28

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Solution

The fourth proportional to 126,912.98, 175,117.71 and 72,440.28 is: 99,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.98 : 175,117.71 = 72,440.28 : x
  2. Step 2: Convert to fraction form
    126,912.98/175,117.71 = 72,440.28/x
  3. Step 3: Cross multiply
    126,912.98x = 175,117.71 × 72,440.28
  4. Step 4: Simplify right side
    126,912.98x = 12,685,575,945.36
  5. Step 5: Solve for x
    x = 12,685,575,945.36/126,912.98
  6. Step 6: Final answer
    x = 99,954.91

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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.