Home / 148,807.28-205,351.80-85,160.72

Finding the Fourth Proportional to 148,807.28, 205,351.80 and 85,160.72

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Solution

The fourth proportional to 148,807.28, 205,351.80 and 85,160.72 is: 117,520.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,807.28 : 205,351.80 = 85,160.72 : x
  2. Step 2: Convert to fraction form
    148,807.28/205,351.80 = 85,160.72/x
  3. Step 3: Cross multiply
    148,807.28x = 205,351.80 × 85,160.72
  4. Step 4: Simplify right side
    148,807.28x = 17,487,907,141.30
  5. Step 5: Solve for x
    x = 17,487,907,141.30/148,807.28
  6. Step 6: Final answer
    x = 117,520.51

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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.