Home / 100,974.96-139,345.56-58,558.14

Finding the Fourth Proportional to 100,974.96, 139,345.56 and 58,558.14

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Solution

The fourth proportional to 100,974.96, 139,345.56 and 58,558.14 is: 80,810.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,974.96 : 139,345.56 = 58,558.14 : x
  2. Step 2: Convert to fraction form
    100,974.96/139,345.56 = 58,558.14/x
  3. Step 3: Cross multiply
    100,974.96x = 139,345.56 × 58,558.14
  4. Step 4: Simplify right side
    100,974.96x = 8,159,816,810.86
  5. Step 5: Solve for x
    x = 8,159,816,810.86/100,974.96
  6. Step 6: Final answer
    x = 80,810.30

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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.