Home / 100,218.72-138,394.80-75,024.48

Finding the Fourth Proportional to 100,218.72, 138,394.80 and 75,024.48

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Solution

The fourth proportional to 100,218.72, 138,394.80 and 75,024.48 is: 103,603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218.72 : 138,394.80 = 75,024.48 : x
  2. Step 2: Convert to fraction form
    100,218.72/138,394.80 = 75,024.48/x
  3. Step 3: Cross multiply
    100,218.72x = 138,394.80 × 75,024.48
  4. Step 4: Simplify right side
    100,218.72x = 10,382,997,904.70
  5. Step 5: Solve for x
    x = 10,382,997,904.70/100,218.72
  6. Step 6: Final answer
    x = 103,603.38

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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.