Home / 126,216.12-174,147.18-77,145.32

Finding the Fourth Proportional to 126,216.12, 174,147.18 and 77,145.32

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Solution

The fourth proportional to 126,216.12, 174,147.18 and 77,145.32 is: 106,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,216.12 : 174,147.18 = 77,145.32 : x
  2. Step 2: Convert to fraction form
    126,216.12/174,147.18 = 77,145.32/x
  3. Step 3: Cross multiply
    126,216.12x = 174,147.18 × 77,145.32
  4. Step 4: Simplify right side
    126,216.12x = 13,434,639,928.20
  5. Step 5: Solve for x
    x = 13,434,639,928.20/126,216.12
  6. Step 6: Final answer
    x = 106,441.55

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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.