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Finding the Fourth Proportional to 144,645.32, 199,631.50 and 80,987.22

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Solution

The fourth proportional to 144,645.32, 199,631.50 and 80,987.22 is: 111,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,645.32 : 199,631.50 = 80,987.22 : x
  2. Step 2: Convert to fraction form
    144,645.32/199,631.50 = 80,987.22/x
  3. Step 3: Cross multiply
    144,645.32x = 199,631.50 × 80,987.22
  4. Step 4: Simplify right side
    144,645.32x = 16,167,600,209.43
  5. Step 5: Solve for x
    x = 16,167,600,209.43/144,645.32
  6. Step 6: Final answer
    x = 111,774.10

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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.