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Finding the Fourth Proportional to 101,490.67, 140,010.36 and 65,692.18

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Solution

The fourth proportional to 101,490.67, 140,010.36 and 65,692.18 is: 90,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,490.67 : 140,010.36 = 65,692.18 : x
  2. Step 2: Convert to fraction form
    101,490.67/140,010.36 = 65,692.18/x
  3. Step 3: Cross multiply
    101,490.67x = 140,010.36 × 65,692.18
  4. Step 4: Simplify right side
    101,490.67x = 9,197,585,770.98
  5. Step 5: Solve for x
    x = 9,197,585,770.98/101,490.67
  6. Step 6: Final answer
    x = 90,624.94

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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.