Home / 148,667.60-205,162.80-80,685.16

Finding the Fourth Proportional to 148,667.60, 205,162.80 and 80,685.16

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Solution

The fourth proportional to 148,667.60, 205,162.80 and 80,685.16 is: 111,346.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,667.60 : 205,162.80 = 80,685.16 : x
  2. Step 2: Convert to fraction form
    148,667.60/205,162.80 = 80,685.16/x
  3. Step 3: Cross multiply
    148,667.60x = 205,162.80 × 80,685.16
  4. Step 4: Simplify right side
    148,667.60x = 16,553,593,344.05
  5. Step 5: Solve for x
    x = 16,553,593,344.05/148,667.60
  6. Step 6: Final answer
    x = 111,346.34

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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.