Home / 142,974.40-197,328.36-79,332.70

Finding the Fourth Proportional to 142,974.40, 197,328.36 and 79,332.70

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Solution

The fourth proportional to 142,974.40, 197,328.36 and 79,332.70 is: 109,492.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,974.40 : 197,328.36 = 79,332.70 : x
  2. Step 2: Convert to fraction form
    142,974.40/197,328.36 = 79,332.70/x
  3. Step 3: Cross multiply
    142,974.40x = 197,328.36 × 79,332.70
  4. Step 4: Simplify right side
    142,974.40x = 15,654,591,585.37
  5. Step 5: Solve for x
    x = 15,654,591,585.37/142,974.40
  6. Step 6: Final answer
    x = 109,492.27

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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.