Home / 100,213.47-138,260.25-57,162.03

Finding the Fourth Proportional to 100,213.47, 138,260.25 and 57,162.03

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Solution

The fourth proportional to 100,213.47, 138,260.25 and 57,162.03 is: 78,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,213.47 : 138,260.25 = 57,162.03 : x
  2. Step 2: Convert to fraction form
    100,213.47/138,260.25 = 57,162.03/x
  3. Step 3: Cross multiply
    100,213.47x = 138,260.25 × 57,162.03
  4. Step 4: Simplify right side
    100,213.47x = 7,903,236,558.31
  5. Step 5: Solve for x
    x = 7,903,236,558.31/100,213.47
  6. Step 6: Final answer
    x = 78,864.01

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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.