Home / 135,169.51-186,502.85-80,711.05

Finding the Fourth Proportional to 135,169.51, 186,502.85 and 80,711.05

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Solution

The fourth proportional to 135,169.51, 186,502.85 and 80,711.05 is: 111,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,169.51 : 186,502.85 = 80,711.05 : x
  2. Step 2: Convert to fraction form
    135,169.51/186,502.85 = 80,711.05/x
  3. Step 3: Cross multiply
    135,169.51x = 186,502.85 × 80,711.05
  4. Step 4: Simplify right side
    135,169.51x = 15,052,841,088.04
  5. Step 5: Solve for x
    x = 15,052,841,088.04/135,169.51
  6. Step 6: Final answer
    x = 111,362.70

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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.