Home / 100,825.30-139,130.67-58,386.58

Finding the Fourth Proportional to 100,825.30, 139,130.67 and 58,386.58

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Solution

The fourth proportional to 100,825.30, 139,130.67 and 58,386.58 is: 80,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,825.30 : 139,130.67 = 58,386.58 : x
  2. Step 2: Convert to fraction form
    100,825.30/139,130.67 = 58,386.58/x
  3. Step 3: Cross multiply
    100,825.30x = 139,130.67 × 58,386.58
  4. Step 4: Simplify right side
    100,825.30x = 8,123,363,994.41
  5. Step 5: Solve for x
    x = 8,123,363,994.41/100,825.30
  6. Step 6: Final answer
    x = 80,568.71

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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.