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Finding the Fourth Proportional to 158,019.20, 236,942.40 and 64,419.20

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Solution

The fourth proportional to 158,019.20, 236,942.40 and 64,419.20 is: 96,593.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,019.20 : 236,942.40 = 64,419.20 : x
  2. Step 2: Convert to fraction form
    158,019.20/236,942.40 = 64,419.20/x
  3. Step 3: Cross multiply
    158,019.20x = 236,942.40 × 64,419.20
  4. Step 4: Simplify right side
    158,019.20x = 15,263,639,854.08
  5. Step 5: Solve for x
    x = 15,263,639,854.08/158,019.20
  6. Step 6: Final answer
    x = 96,593.58

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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.