Home / 143,340.48-197,781.12-86,755.68

Finding the Fourth Proportional to 143,340.48, 197,781.12 and 86,755.68

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Solution

The fourth proportional to 143,340.48, 197,781.12 and 86,755.68 is: 119,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,340.48 : 197,781.12 = 86,755.68 : x
  2. Step 2: Convert to fraction form
    143,340.48/197,781.12 = 86,755.68/x
  3. Step 3: Cross multiply
    143,340.48x = 197,781.12 × 86,755.68
  4. Step 4: Simplify right side
    143,340.48x = 17,158,635,556.76
  5. Step 5: Solve for x
    x = 17,158,635,556.76/143,340.48
  6. Step 6: Final answer
    x = 119,705.44

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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.