Home / 129,441.53-178,628.94-72,852.90

Finding the Fourth Proportional to 129,441.53, 178,628.94 and 72,852.90

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Solution

The fourth proportional to 129,441.53, 178,628.94 and 72,852.90 is: 100,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,441.53 : 178,628.94 = 72,852.90 : x
  2. Step 2: Convert to fraction form
    129,441.53/178,628.94 = 72,852.90/x
  3. Step 3: Cross multiply
    129,441.53x = 178,628.94 × 72,852.90
  4. Step 4: Simplify right side
    129,441.53x = 13,013,636,302.93
  5. Step 5: Solve for x
    x = 13,013,636,302.93/129,441.53
  6. Step 6: Final answer
    x = 100,536.79

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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.