Home / 142,802.30-197,131.11-102,712.70

Finding the Fourth Proportional to 142,802.30, 197,131.11 and 102,712.70

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Solution

The fourth proportional to 142,802.30, 197,131.11 and 102,712.70 is: 141,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,802.30 : 197,131.11 = 102,712.70 : x
  2. Step 2: Convert to fraction form
    142,802.30/197,131.11 = 102,712.70/x
  3. Step 3: Cross multiply
    142,802.30x = 197,131.11 × 102,712.70
  4. Step 4: Simplify right side
    142,802.30x = 20,247,868,562.10
  5. Step 5: Solve for x
    x = 20,247,868,562.10/142,802.30
  6. Step 6: Final answer
    x = 141,789.51

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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.