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Finding the Fourth Proportional to 148,140, 204,437.52 and 81,076.32

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Solution

The fourth proportional to 148,140, 204,437.52 and 81,076.32 is: 111,887.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,140 : 204,437.52 = 81,076.32 : x
  2. Step 2: Convert to fraction form
    148,140/204,437.52 = 81,076.32/x
  3. Step 3: Cross multiply
    148,140x = 204,437.52 × 81,076.32
  4. Step 4: Simplify right side
    148,140x = 16,575,041,791.53
  5. Step 5: Solve for x
    x = 16,575,041,791.53/148,140
  6. Step 6: Final answer
    x = 111,887.69

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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.