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Finding the Fourth Proportional to 148,975.16, 205,585.98 and 81,907.16

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Solution

The fourth proportional to 148,975.16, 205,585.98 and 81,907.16 is: 113,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,975.16 : 205,585.98 = 81,907.16 : x
  2. Step 2: Convert to fraction form
    148,975.16/205,585.98 = 81,907.16/x
  3. Step 3: Cross multiply
    148,975.16x = 205,585.98 × 81,907.16
  4. Step 4: Simplify right side
    148,975.16x = 16,838,963,757.62
  5. Step 5: Solve for x
    x = 16,838,963,757.62/148,975.16
  6. Step 6: Final answer
    x = 113,032.02

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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.