Home / 126,720.44-174,715.24-81,318.32

Finding the Fourth Proportional to 126,720.44, 174,715.24 and 81,318.32

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Solution

The fourth proportional to 126,720.44, 174,715.24 and 81,318.32 is: 112,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,720.44 : 174,715.24 = 81,318.32 : x
  2. Step 2: Convert to fraction form
    126,720.44/174,715.24 = 81,318.32/x
  3. Step 3: Cross multiply
    126,720.44x = 174,715.24 × 81,318.32
  4. Step 4: Simplify right side
    126,720.44x = 14,207,549,795.20
  5. Step 5: Solve for x
    x = 14,207,549,795.20/126,720.44
  6. Step 6: Final answer
    x = 112,117.27

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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.