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Finding the Fourth Proportional to 101,425.10, 139,919.49 and 65,626.65

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Solution

The fourth proportional to 101,425.10, 139,919.49 and 65,626.65 is: 90,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,425.10 : 139,919.49 = 65,626.65 : x
  2. Step 2: Convert to fraction form
    101,425.10/139,919.49 = 65,626.65/x
  3. Step 3: Cross multiply
    101,425.10x = 139,919.49 × 65,626.65
  4. Step 4: Simplify right side
    101,425.10x = 9,182,447,398.41
  5. Step 5: Solve for x
    x = 9,182,447,398.41/101,425.10
  6. Step 6: Final answer
    x = 90,534.27

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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.