Home / 126,428.64-174,506.24-78,653.48

Finding the Fourth Proportional to 126,428.64, 174,506.24 and 78,653.48

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Solution

The fourth proportional to 126,428.64, 174,506.24 and 78,653.48 is: 108,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428.64 : 174,506.24 = 78,653.48 : x
  2. Step 2: Convert to fraction form
    126,428.64/174,506.24 = 78,653.48/x
  3. Step 3: Cross multiply
    126,428.64x = 174,506.24 × 78,653.48
  4. Step 4: Simplify right side
    126,428.64x = 13,725,523,057.72
  5. Step 5: Solve for x
    x = 13,725,523,057.72/126,428.64
  6. Step 6: Final answer
    x = 108,563.40

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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.