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Finding the Fourth Proportional to 144,303.76, 199,137.79 and 80,641.61

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Solution

The fourth proportional to 144,303.76, 199,137.79 and 80,641.61 is: 111,284.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,303.76 : 199,137.79 = 80,641.61 : x
  2. Step 2: Convert to fraction form
    144,303.76/199,137.79 = 80,641.61/x
  3. Step 3: Cross multiply
    144,303.76x = 199,137.79 × 80,641.61
  4. Step 4: Simplify right side
    144,303.76x = 16,058,791,849.32
  5. Step 5: Solve for x
    x = 16,058,791,849.32/144,303.76
  6. Step 6: Final answer
    x = 111,284.64

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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.