Home / 100,282.19-138,359.75-57,260.25

Finding the Fourth Proportional to 100,282.19, 138,359.75 and 57,260.25

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Solution

The fourth proportional to 100,282.19, 138,359.75 and 57,260.25 is: 79,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,282.19 : 138,359.75 = 57,260.25 : x
  2. Step 2: Convert to fraction form
    100,282.19/138,359.75 = 57,260.25/x
  3. Step 3: Cross multiply
    100,282.19x = 138,359.75 × 57,260.25
  4. Step 4: Simplify right side
    100,282.19x = 7,922,513,588.64
  5. Step 5: Solve for x
    x = 7,922,513,588.64/100,282.19
  6. Step 6: Final answer
    x = 79,002.20

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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.