Home / 137,180.28-189,299.88-76,740.48

Finding the Fourth Proportional to 137,180.28, 189,299.88 and 76,740.48

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Solution

The fourth proportional to 137,180.28, 189,299.88 and 76,740.48 is: 105,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,180.28 : 189,299.88 = 76,740.48 : x
  2. Step 2: Convert to fraction form
    137,180.28/189,299.88 = 76,740.48/x
  3. Step 3: Cross multiply
    137,180.28x = 189,299.88 × 76,740.48
  4. Step 4: Simplify right side
    137,180.28x = 14,526,963,655.14
  5. Step 5: Solve for x
    x = 14,526,963,655.14/137,180.28
  6. Step 6: Final answer
    x = 105,896.88

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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.