Home / 100,824.12-139,143.95-58,382.65

Finding the Fourth Proportional to 100,824.12, 139,143.95 and 58,382.65

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Solution

The fourth proportional to 100,824.12, 139,143.95 and 58,382.65 is: 80,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,824.12 : 139,143.95 = 58,382.65 : x
  2. Step 2: Convert to fraction form
    100,824.12/139,143.95 = 58,382.65/x
  3. Step 3: Cross multiply
    100,824.12x = 139,143.95 × 58,382.65
  4. Step 4: Simplify right side
    100,824.12x = 8,123,592,036.83
  5. Step 5: Solve for x
    x = 8,123,592,036.83/100,824.12
  6. Step 6: Final answer
    x = 80,571.91

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1.5x scale

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.