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Finding the Fourth Proportional to 129,762.60, 179,072.10 and 73,173.58

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Solution

The fourth proportional to 129,762.60, 179,072.10 and 73,173.58 is: 100,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,762.60 : 179,072.10 = 73,173.58 : x
  2. Step 2: Convert to fraction form
    129,762.60/179,072.10 = 73,173.58/x
  3. Step 3: Cross multiply
    129,762.60x = 179,072.10 × 73,173.58
  4. Step 4: Simplify right side
    129,762.60x = 13,103,346,635.12
  5. Step 5: Solve for x
    x = 13,103,346,635.12/129,762.60
  6. Step 6: Final answer
    x = 100,979.38

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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.