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Finding the Fourth Proportional to 101,225.98, 139,601.46 and 65,378.26

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Solution

The fourth proportional to 101,225.98, 139,601.46 and 65,378.26 is: 90,163.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,225.98 : 139,601.46 = 65,378.26 : x
  2. Step 2: Convert to fraction form
    101,225.98/139,601.46 = 65,378.26/x
  3. Step 3: Cross multiply
    101,225.98x = 139,601.46 × 65,378.26
  4. Step 4: Simplify right side
    101,225.98x = 9,126,900,548.26
  5. Step 5: Solve for x
    x = 9,126,900,548.26/101,225.98
  6. Step 6: Final answer
    x = 90,163.62

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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.