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Finding the Fourth Proportional to 101,795.40, 140,503.41 and 65,521.44

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Solution

The fourth proportional to 101,795.40, 140,503.41 and 65,521.44 is: 90,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,795.40 : 140,503.41 = 65,521.44 : x
  2. Step 2: Convert to fraction form
    101,795.40/140,503.41 = 65,521.44/x
  3. Step 3: Cross multiply
    101,795.40x = 140,503.41 × 65,521.44
  4. Step 4: Simplify right side
    101,795.40x = 9,205,985,748.11
  5. Step 5: Solve for x
    x = 9,205,985,748.11/101,795.40
  6. Step 6: Final answer
    x = 90,436.17

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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.