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Finding the Fourth Proportional to 129,763.36, 179,073.84 and 73,174.72

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Solution

The fourth proportional to 129,763.36, 179,073.84 and 73,174.72 is: 100,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,763.36 : 179,073.84 = 73,174.72 : x
  2. Step 2: Convert to fraction form
    129,763.36/179,073.84 = 73,174.72/x
  3. Step 3: Cross multiply
    129,763.36x = 179,073.84 × 73,174.72
  4. Step 4: Simplify right side
    129,763.36x = 13,103,678,101.32
  5. Step 5: Solve for x
    x = 13,103,678,101.32/129,763.36
  6. Step 6: Final answer
    x = 100,981.34

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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.