Home / 90,999.72-125,702.28-82,511.46

Finding the Fourth Proportional to 90,999.72, 125,702.28 and 82,511.46

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Solution

The fourth proportional to 90,999.72, 125,702.28 and 82,511.46 is: 113,977.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,999.72 : 125,702.28 = 82,511.46 : x
  2. Step 2: Convert to fraction form
    90,999.72/125,702.28 = 82,511.46/x
  3. Step 3: Cross multiply
    90,999.72x = 125,702.28 × 82,511.46
  4. Step 4: Simplify right side
    90,999.72x = 10,371,878,648.13
  5. Step 5: Solve for x
    x = 10,371,878,648.13/90,999.72
  6. Step 6: Final answer
    x = 113,977.04

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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.