Home / 121,283.20-181,924.80-91,758.70

Finding the Fourth Proportional to 121,283.20, 181,924.80 and 91,758.70

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Solution

The fourth proportional to 121,283.20, 181,924.80 and 91,758.70 is: 137,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,283.20 : 181,924.80 = 91,758.70 : x
  2. Step 2: Convert to fraction form
    121,283.20/181,924.80 = 91,758.70/x
  3. Step 3: Cross multiply
    121,283.20x = 181,924.80 × 91,758.70
  4. Step 4: Simplify right side
    121,283.20x = 16,693,183,145.76
  5. Step 5: Solve for x
    x = 16,693,183,145.76/121,283.20
  6. Step 6: Final answer
    x = 137,638.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.