Home / 143,557.20-198,111.24-79,897.68

Finding the Fourth Proportional to 143,557.20, 198,111.24 and 79,897.68

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Solution

The fourth proportional to 143,557.20, 198,111.24 and 79,897.68 is: 110,260.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,557.20 : 198,111.24 = 79,897.68 : x
  2. Step 2: Convert to fraction form
    143,557.20/198,111.24 = 79,897.68/x
  3. Step 3: Cross multiply
    143,557.20x = 198,111.24 × 79,897.68
  4. Step 4: Simplify right side
    143,557.20x = 15,828,628,457.92
  5. Step 5: Solve for x
    x = 15,828,628,457.92/143,557.20
  6. Step 6: Final answer
    x = 110,260.08

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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.