Home / 129,912.84-179,276.24-72,550.58

Finding the Fourth Proportional to 129,912.84, 179,276.24 and 72,550.58

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Solution

The fourth proportional to 129,912.84, 179,276.24 and 72,550.58 is: 100,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,912.84 : 179,276.24 = 72,550.58 : x
  2. Step 2: Convert to fraction form
    129,912.84/179,276.24 = 72,550.58/x
  3. Step 3: Cross multiply
    129,912.84x = 179,276.24 × 72,550.58
  4. Step 4: Simplify right side
    129,912.84x = 13,006,594,477.21
  5. Step 5: Solve for x
    x = 13,006,594,477.21/129,912.84
  6. Step 6: Final answer
    x = 100,117.85

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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.