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Finding the Fourth Proportional to 101,474.70, 139,920.45 and 75,899.10

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Solution

The fourth proportional to 101,474.70, 139,920.45 and 75,899.10 is: 104,655.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,474.70 : 139,920.45 = 75,899.10 : x
  2. Step 2: Convert to fraction form
    101,474.70/139,920.45 = 75,899.10/x
  3. Step 3: Cross multiply
    101,474.70x = 139,920.45 × 75,899.10
  4. Step 4: Simplify right side
    101,474.70x = 10,619,836,226.60
  5. Step 5: Solve for x
    x = 10,619,836,226.60/101,474.70
  6. Step 6: Final answer
    x = 104,655.01

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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.