Home / 126,400.78-174,431.91-69,812.86

Finding the Fourth Proportional to 126,400.78, 174,431.91 and 69,812.86

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Solution

The fourth proportional to 126,400.78, 174,431.91 and 69,812.86 is: 96,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,400.78 : 174,431.91 = 69,812.86 : x
  2. Step 2: Convert to fraction form
    126,400.78/174,431.91 = 69,812.86/x
  3. Step 3: Cross multiply
    126,400.78x = 174,431.91 × 69,812.86
  4. Step 4: Simplify right side
    126,400.78x = 12,177,590,512.36
  5. Step 5: Solve for x
    x = 12,177,590,512.36/126,400.78
  6. Step 6: Final answer
    x = 96,341.10

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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.