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Finding the Fourth Proportional to 80,954.36, 120,813.30 and 72,097.01

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Solution

The fourth proportional to 80,954.36, 120,813.30 and 72,097.01 is: 107,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,954.36 : 120,813.30 = 72,097.01 : x
  2. Step 2: Convert to fraction form
    80,954.36/120,813.30 = 72,097.01/x
  3. Step 3: Cross multiply
    80,954.36x = 120,813.30 × 72,097.01
  4. Step 4: Simplify right side
    80,954.36x = 8,710,277,337.75
  5. Step 5: Solve for x
    x = 8,710,277,337.75/80,954.36
  6. Step 6: Final answer
    x = 107,594.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.