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Finding the Fourth Proportional to 115,356.60, 173,028.60 and 81,483.30

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Solution

The fourth proportional to 115,356.60, 173,028.60 and 81,483.30 is: 122,220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,356.60 : 173,028.60 = 81,483.30 : x
  2. Step 2: Convert to fraction form
    115,356.60/173,028.60 = 81,483.30/x
  3. Step 3: Cross multiply
    115,356.60x = 173,028.60 × 81,483.30
  4. Step 4: Simplify right side
    115,356.60x = 14,098,941,322.38
  5. Step 5: Solve for x
    x = 14,098,941,322.38/115,356.60
  6. Step 6: Final answer
    x = 122,220.50

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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.