Home / 100,749.73-139,068.77-62,531.65

Finding the Fourth Proportional to 100,749.73, 139,068.77 and 62,531.65

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Solution

The fourth proportional to 100,749.73, 139,068.77 and 62,531.65 is: 86,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,749.73 : 139,068.77 = 62,531.65 : x
  2. Step 2: Convert to fraction form
    100,749.73/139,068.77 = 62,531.65/x
  3. Step 3: Cross multiply
    100,749.73x = 139,068.77 × 62,531.65
  4. Step 4: Simplify right side
    100,749.73x = 8,696,198,991.24
  5. Step 5: Solve for x
    x = 8,696,198,991.24/100,749.73
  6. Step 6: Final answer
    x = 86,314.86

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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.