Home / 100,571.61-138,773.40-58,121.95

Finding the Fourth Proportional to 100,571.61, 138,773.40 and 58,121.95

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Solution

The fourth proportional to 100,571.61, 138,773.40 and 58,121.95 is: 80,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,571.61 : 138,773.40 = 58,121.95 : x
  2. Step 2: Convert to fraction form
    100,571.61/138,773.40 = 58,121.95/x
  3. Step 3: Cross multiply
    100,571.61x = 138,773.40 × 58,121.95
  4. Step 4: Simplify right side
    100,571.61x = 8,065,779,922.26
  5. Step 5: Solve for x
    x = 8,065,779,922.26/100,571.61
  6. Step 6: Final answer
    x = 80,199.38

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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.