Home / 129,050.84-178,154.92-80,679.64

Finding the Fourth Proportional to 129,050.84, 178,154.92 and 80,679.64

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Solution

The fourth proportional to 129,050.84, 178,154.92 and 80,679.64 is: 111,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,050.84 : 178,154.92 = 80,679.64 : x
  2. Step 2: Convert to fraction form
    129,050.84/178,154.92 = 80,679.64/x
  3. Step 3: Cross multiply
    129,050.84x = 178,154.92 × 80,679.64
  4. Step 4: Simplify right side
    129,050.84x = 14,373,474,809.83
  5. Step 5: Solve for x
    x = 14,373,474,809.83/129,050.84
  6. Step 6: Final answer
    x = 111,378.39

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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.