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Finding the Fourth Proportional to 101,420.39, 152,138.79 and 34,860.57

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Solution

The fourth proportional to 101,420.39, 152,138.79 and 34,860.57 is: 52,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,420.39 : 152,138.79 = 34,860.57 : x
  2. Step 2: Convert to fraction form
    101,420.39/152,138.79 = 34,860.57/x
  3. Step 3: Cross multiply
    101,420.39x = 152,138.79 × 34,860.57
  4. Step 4: Simplify right side
    101,420.39x = 5,303,644,938.51
  5. Step 5: Solve for x
    x = 5,303,644,938.51/101,420.39
  6. Step 6: Final answer
    x = 52,293.68

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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.