Home / 126,399.78-174,430.53-69,811.86

Finding the Fourth Proportional to 126,399.78, 174,430.53 and 69,811.86

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Solution

The fourth proportional to 126,399.78, 174,430.53 and 69,811.86 is: 96,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,399.78 : 174,430.53 = 69,811.86 : x
  2. Step 2: Convert to fraction form
    126,399.78/174,430.53 = 69,811.86/x
  3. Step 3: Cross multiply
    126,399.78x = 174,430.53 × 69,811.86
  4. Step 4: Simplify right side
    126,399.78x = 12,177,319,740.09
  5. Step 5: Solve for x
    x = 12,177,319,740.09/126,399.78
  6. Step 6: Final answer
    x = 96,339.72

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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.