Home / 100,974.28-139,345.06-58,557.96

Finding the Fourth Proportional to 100,974.28, 139,345.06 and 58,557.96

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Solution

The fourth proportional to 100,974.28, 139,345.06 and 58,557.96 is: 80,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,974.28 : 139,345.06 = 58,557.96 : x
  2. Step 2: Convert to fraction form
    100,974.28/139,345.06 = 58,557.96/x
  3. Step 3: Cross multiply
    100,974.28x = 139,345.06 × 58,557.96
  4. Step 4: Simplify right side
    100,974.28x = 8,159,762,449.68
  5. Step 5: Solve for x
    x = 8,159,762,449.68/100,974.28
  6. Step 6: Final answer
    x = 80,810.31

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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.