Home / 100,050.39-138,081.51-57,608.01

Finding the Fourth Proportional to 100,050.39, 138,081.51 and 57,608.01

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Solution

The fourth proportional to 100,050.39, 138,081.51 and 57,608.01 is: 79,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,050.39 : 138,081.51 = 57,608.01 : x
  2. Step 2: Convert to fraction form
    100,050.39/138,081.51 = 57,608.01/x
  3. Step 3: Cross multiply
    100,050.39x = 138,081.51 × 57,608.01
  4. Step 4: Simplify right side
    100,050.39x = 7,954,601,008.90
  5. Step 5: Solve for x
    x = 7,954,601,008.90/100,050.39
  6. Step 6: Final answer
    x = 79,505.95

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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.