Home / 100,272.45-138,374.31-59,963.30

Finding the Fourth Proportional to 100,272.45, 138,374.31 and 59,963.30

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Solution

The fourth proportional to 100,272.45, 138,374.31 and 59,963.30 is: 82,748.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,272.45 : 138,374.31 = 59,963.30 : x
  2. Step 2: Convert to fraction form
    100,272.45/138,374.31 = 59,963.30/x
  3. Step 3: Cross multiply
    100,272.45x = 138,374.31 × 59,963.30
  4. Step 4: Simplify right side
    100,272.45x = 8,297,380,262.82
  5. Step 5: Solve for x
    x = 8,297,380,262.82/100,272.45
  6. Step 6: Final answer
    x = 82,748.35

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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.