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Finding the Fourth Proportional to 144,443.10, 199,331.32 and 80,780.90

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Solution

The fourth proportional to 144,443.10, 199,331.32 and 80,780.90 is: 111,477.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,443.10 : 199,331.32 = 80,780.90 : x
  2. Step 2: Convert to fraction form
    144,443.10/199,331.32 = 80,780.90/x
  3. Step 3: Cross multiply
    144,443.10x = 199,331.32 × 80,780.90
  4. Step 4: Simplify right side
    144,443.10x = 16,102,163,427.79
  5. Step 5: Solve for x
    x = 16,102,163,427.79/144,443.10
  6. Step 6: Final answer
    x = 111,477.55

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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.