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Finding the Fourth Proportional to 101,208.60, 151,569.90 and 54,358.20

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Solution

The fourth proportional to 101,208.60, 151,569.90 and 54,358.20 is: 81,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,208.60 : 151,569.90 = 54,358.20 : x
  2. Step 2: Convert to fraction form
    101,208.60/151,569.90 = 54,358.20/x
  3. Step 3: Cross multiply
    101,208.60x = 151,569.90 × 54,358.20
  4. Step 4: Simplify right side
    101,208.60x = 8,239,066,938.18
  5. Step 5: Solve for x
    x = 8,239,066,938.18/101,208.60
  6. Step 6: Final answer
    x = 81,406.79

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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.