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Finding the Fourth Proportional to 101,438.10, 151,811.55 and 101,438.10

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Solution

The fourth proportional to 101,438.10, 151,811.55 and 101,438.10 is: 151,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,438.10 : 151,811.55 = 101,438.10 : x
  2. Step 2: Convert to fraction form
    101,438.10/151,811.55 = 101,438.10/x
  3. Step 3: Cross multiply
    101,438.10x = 151,811.55 × 101,438.10
  4. Step 4: Simplify right side
    101,438.10x = 15,399,475,190.06
  5. Step 5: Solve for x
    x = 15,399,475,190.06/101,438.10
  6. Step 6: Final answer
    x = 151,811.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.