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Finding the Fourth Proportional to 101,473.53, 139,972.25 and 67,018.47

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Solution

The fourth proportional to 101,473.53, 139,972.25 and 67,018.47 is: 92,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,473.53 : 139,972.25 = 67,018.47 : x
  2. Step 2: Convert to fraction form
    101,473.53/139,972.25 = 67,018.47/x
  3. Step 3: Cross multiply
    101,473.53x = 139,972.25 × 67,018.47
  4. Step 4: Simplify right side
    101,473.53x = 9,380,725,702.37
  5. Step 5: Solve for x
    x = 9,380,725,702.37/101,473.53
  6. Step 6: Final answer
    x = 92,445.05

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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.