Home / 143,628.17-198,236.92-86,270.00

Finding the Fourth Proportional to 143,628.17, 198,236.92 and 86,270.00

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Solution

The fourth proportional to 143,628.17, 198,236.92 and 86,270.00 is: 119,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,628.17 : 198,236.92 = 86,270.00 : x
  2. Step 2: Convert to fraction form
    143,628.17/198,236.92 = 86,270.00/x
  3. Step 3: Cross multiply
    143,628.17x = 198,236.92 × 86,270.00
  4. Step 4: Simplify right side
    143,628.17x = 17,101,897,881.54
  5. Step 5: Solve for x
    x = 17,101,897,881.54/143,628.17
  6. Step 6: Final answer
    x = 119,070.64

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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.