Home / 137,133.24-189,261.40-76,707.24

Finding the Fourth Proportional to 137,133.24, 189,261.40 and 76,707.24

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Solution

The fourth proportional to 137,133.24, 189,261.40 and 76,707.24 is: 105,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,133.24 : 189,261.40 = 76,707.24 : x
  2. Step 2: Convert to fraction form
    137,133.24/189,261.40 = 76,707.24/x
  3. Step 3: Cross multiply
    137,133.24x = 189,261.40 × 76,707.24
  4. Step 4: Simplify right side
    137,133.24x = 14,517,719,632.54
  5. Step 5: Solve for x
    x = 14,517,719,632.54/137,133.24
  6. Step 6: Final answer
    x = 105,865.80

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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.