Home / 148,918.61-205,507.68-80,935.74

Finding the Fourth Proportional to 148,918.61, 205,507.68 and 80,935.74

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Solution

The fourth proportional to 148,918.61, 205,507.68 and 80,935.74 is: 111,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,918.61 : 205,507.68 = 80,935.74 : x
  2. Step 2: Convert to fraction form
    148,918.61/205,507.68 = 80,935.74/x
  3. Step 3: Cross multiply
    148,918.61x = 205,507.68 × 80,935.74
  4. Step 4: Simplify right side
    148,918.61x = 16,632,915,852.97
  5. Step 5: Solve for x
    x = 16,632,915,852.97/148,918.61
  6. Step 6: Final answer
    x = 111,691.32

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1.5x scale

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.