Home / 169,972.40-254,440.20-99,642.80

Finding the Fourth Proportional to 169,972.40, 254,440.20 and 99,642.80

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Solution

The fourth proportional to 169,972.40, 254,440.20 and 99,642.80 is: 149,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,972.40 : 254,440.20 = 99,642.80 : x
  2. Step 2: Convert to fraction form
    169,972.40/254,440.20 = 99,642.80/x
  3. Step 3: Cross multiply
    169,972.40x = 254,440.20 × 99,642.80
  4. Step 4: Simplify right side
    169,972.40x = 25,353,133,960.56
  5. Step 5: Solve for x
    x = 25,353,133,960.56/169,972.40
  6. Step 6: Final answer
    x = 149,160.30

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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.