Home / 148,918.53-205,509.15-80,935.50

Finding the Fourth Proportional to 148,918.53, 205,509.15 and 80,935.50

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Solution

The fourth proportional to 148,918.53, 205,509.15 and 80,935.50 is: 111,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,918.53 : 205,509.15 = 80,935.50 : x
  2. Step 2: Convert to fraction form
    148,918.53/205,509.15 = 80,935.50/x
  3. Step 3: Cross multiply
    148,918.53x = 205,509.15 × 80,935.50
  4. Step 4: Simplify right side
    148,918.53x = 16,632,985,809.83
  5. Step 5: Solve for x
    x = 16,632,985,809.83/148,918.53
  6. Step 6: Final answer
    x = 111,691.85

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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.