Home / 129,557.04-178,790.58-72,194.76

Finding the Fourth Proportional to 129,557.04, 178,790.58 and 72,194.76

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Solution

The fourth proportional to 129,557.04, 178,790.58 and 72,194.76 is: 99,629.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,557.04 : 178,790.58 = 72,194.76 : x
  2. Step 2: Convert to fraction form
    129,557.04/178,790.58 = 72,194.76/x
  3. Step 3: Cross multiply
    129,557.04x = 178,790.58 × 72,194.76
  4. Step 4: Simplify right side
    129,557.04x = 12,907,743,013.36
  5. Step 5: Solve for x
    x = 12,907,743,013.36/129,557.04
  6. Step 6: Final answer
    x = 99,629.81

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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.