Home / 126,621.96-174,792.11-78,898.89

Finding the Fourth Proportional to 126,621.96, 174,792.11 and 78,898.89

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Solution

The fourth proportional to 126,621.96, 174,792.11 and 78,898.89 is: 108,913.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,621.96 : 174,792.11 = 78,898.89 : x
  2. Step 2: Convert to fraction form
    126,621.96/174,792.11 = 78,898.89/x
  3. Step 3: Cross multiply
    126,621.96x = 174,792.11 × 78,898.89
  4. Step 4: Simplify right side
    126,621.96x = 13,790,903,065.26
  5. Step 5: Solve for x
    x = 13,790,903,065.26/126,621.96
  6. Step 6: Final answer
    x = 108,913.99

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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.