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Finding the Fourth Proportional to 115,401, 159,253.86 and 62,409

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Solution

The fourth proportional to 115,401, 159,253.86 and 62,409 is: 86,124.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,401 : 159,253.86 = 62,409 : x
  2. Step 2: Convert to fraction form
    115,401/159,253.86 = 62,409/x
  3. Step 3: Cross multiply
    115,401x = 159,253.86 × 62,409
  4. Step 4: Simplify right side
    115,401x = 9,938,874,148.74
  5. Step 5: Solve for x
    x = 9,938,874,148.74/115,401
  6. Step 6: Final answer
    x = 86,124.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.