Home / 129,384.84-178,551.14-72,796.22

Finding the Fourth Proportional to 129,384.84, 178,551.14 and 72,796.22

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Solution

The fourth proportional to 129,384.84, 178,551.14 and 72,796.22 is: 100,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,384.84 : 178,551.14 = 72,796.22 : x
  2. Step 2: Convert to fraction form
    129,384.84/178,551.14 = 72,796.22/x
  3. Step 3: Cross multiply
    129,384.84x = 178,551.14 × 72,796.22
  4. Step 4: Simplify right side
    129,384.84x = 12,997,847,481.52
  5. Step 5: Solve for x
    x = 12,997,847,481.52/129,384.84
  6. Step 6: Final answer
    x = 100,458.81

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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.