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Finding the Fourth Proportional to 101,140.80, 151,808.40 and 51,277.20

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Solution

The fourth proportional to 101,140.80, 151,808.40 and 51,277.20 is: 76,965.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,140.80 : 151,808.40 = 51,277.20 : x
  2. Step 2: Convert to fraction form
    101,140.80/151,808.40 = 51,277.20/x
  3. Step 3: Cross multiply
    101,140.80x = 151,808.40 × 51,277.20
  4. Step 4: Simplify right side
    101,140.80x = 7,784,309,688.48
  5. Step 5: Solve for x
    x = 7,784,309,688.48/101,140.80
  6. Step 6: Final answer
    x = 76,965.08

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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.