Home / 100,153.06-138,211.25-54,833.92

Finding the Fourth Proportional to 100,153.06, 138,211.25 and 54,833.92

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Solution

The fourth proportional to 100,153.06, 138,211.25 and 54,833.92 is: 75,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,153.06 : 138,211.25 = 54,833.92 : x
  2. Step 2: Convert to fraction form
    100,153.06/138,211.25 = 54,833.92/x
  3. Step 3: Cross multiply
    100,153.06x = 138,211.25 × 54,833.92
  4. Step 4: Simplify right side
    100,153.06x = 7,578,663,797.46
  5. Step 5: Solve for x
    x = 7,578,663,797.46/100,153.06
  6. Step 6: Final answer
    x = 75,670.82

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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.