Home / 100,033.07-138,040.52-54,702.24

Finding the Fourth Proportional to 100,033.07, 138,040.52 and 54,702.24

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Solution

The fourth proportional to 100,033.07, 138,040.52 and 54,702.24 is: 75,486.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,033.07 : 138,040.52 = 54,702.24 : x
  2. Step 2: Convert to fraction form
    100,033.07/138,040.52 = 54,702.24/x
  3. Step 3: Cross multiply
    100,033.07x = 138,040.52 × 54,702.24
  4. Step 4: Simplify right side
    100,033.07x = 7,551,125,654.76
  5. Step 5: Solve for x
    x = 7,551,125,654.76/100,033.07
  6. Step 6: Final answer
    x = 75,486.29

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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.