Home / 109,987.27-151,781.21-61,589.63

Finding the Fourth Proportional to 109,987.27, 151,781.21 and 61,589.63

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Solution

The fourth proportional to 109,987.27, 151,781.21 and 61,589.63 is: 84,993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,987.27 : 151,781.21 = 61,589.63 : x
  2. Step 2: Convert to fraction form
    109,987.27/151,781.21 = 61,589.63/x
  3. Step 3: Cross multiply
    109,987.27x = 151,781.21 × 61,589.63
  4. Step 4: Simplify right side
    109,987.27x = 9,348,148,867.32
  5. Step 5: Solve for x
    x = 9,348,148,867.32/109,987.27
  6. Step 6: Final answer
    x = 84,993.01

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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.