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Finding the Fourth Proportional to 101,376.28, 139,814.40 and 75,942.46

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Solution

The fourth proportional to 101,376.28, 139,814.40 and 75,942.46 is: 104,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376.28 : 139,814.40 = 75,942.46 : x
  2. Step 2: Convert to fraction form
    101,376.28/139,814.40 = 75,942.46/x
  3. Step 3: Cross multiply
    101,376.28x = 139,814.40 × 75,942.46
  4. Step 4: Simplify right side
    101,376.28x = 10,617,849,479.42
  5. Step 5: Solve for x
    x = 10,617,849,479.42/101,376.28
  6. Step 6: Final answer
    x = 104,737.02

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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.