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Finding the Fourth Proportional to 101,382.03, 139,860.70 and 65,583.57

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Solution

The fourth proportional to 101,382.03, 139,860.70 and 65,583.57 is: 90,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,382.03 : 139,860.70 = 65,583.57 : x
  2. Step 2: Convert to fraction form
    101,382.03/139,860.70 = 65,583.57/x
  3. Step 3: Cross multiply
    101,382.03x = 139,860.70 × 65,583.57
  4. Step 4: Simplify right side
    101,382.03x = 9,172,564,553.67
  5. Step 5: Solve for x
    x = 9,172,564,553.67/101,382.03
  6. Step 6: Final answer
    x = 90,475.25

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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.