Home / 153,727.25-212,143.61-86,659.25

Finding the Fourth Proportional to 153,727.25, 212,143.61 and 86,659.25

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Solution

The fourth proportional to 153,727.25, 212,143.61 and 86,659.25 is: 119,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,727.25 : 212,143.61 = 86,659.25 : x
  2. Step 2: Convert to fraction form
    153,727.25/212,143.61 = 86,659.25/x
  3. Step 3: Cross multiply
    153,727.25x = 212,143.61 × 86,659.25
  4. Step 4: Simplify right side
    153,727.25x = 18,384,206,134.89
  5. Step 5: Solve for x
    x = 18,384,206,134.89/153,727.25
  6. Step 6: Final answer
    x = 119,589.77

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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.