Home / 129,516.84-178,664.83-89,160.54

Finding the Fourth Proportional to 129,516.84, 178,664.83 and 89,160.54

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Solution

The fourth proportional to 129,516.84, 178,664.83 and 89,160.54 is: 122,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,516.84 : 178,664.83 = 89,160.54 : x
  2. Step 2: Convert to fraction form
    129,516.84/178,664.83 = 89,160.54/x
  3. Step 3: Cross multiply
    129,516.84x = 178,664.83 × 89,160.54
  4. Step 4: Simplify right side
    129,516.84x = 15,929,852,498.91
  5. Step 5: Solve for x
    x = 15,929,852,498.91/129,516.84
  6. Step 6: Final answer
    x = 122,994.45

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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.