Home / 100,377.08-138,580.44-62,702.36

Finding the Fourth Proportional to 100,377.08, 138,580.44 and 62,702.36

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Solution

The fourth proportional to 100,377.08, 138,580.44 and 62,702.36 is: 86,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,377.08 : 138,580.44 = 62,702.36 : x
  2. Step 2: Convert to fraction form
    100,377.08/138,580.44 = 62,702.36/x
  3. Step 3: Cross multiply
    100,377.08x = 138,580.44 × 62,702.36
  4. Step 4: Simplify right side
    100,377.08x = 8,689,320,637.84
  5. Step 5: Solve for x
    x = 8,689,320,637.84/100,377.08
  6. Step 6: Final answer
    x = 86,566.78

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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.