Home / 137,250.20-189,362.12-76,811.24

Finding the Fourth Proportional to 137,250.20, 189,362.12 and 76,811.24

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Solution

The fourth proportional to 137,250.20, 189,362.12 and 76,811.24 is: 105,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,250.20 : 189,362.12 = 76,811.24 : x
  2. Step 2: Convert to fraction form
    137,250.20/189,362.12 = 76,811.24/x
  3. Step 3: Cross multiply
    137,250.20x = 189,362.12 × 76,811.24
  4. Step 4: Simplify right side
    137,250.20x = 14,545,139,246.23
  5. Step 5: Solve for x
    x = 14,545,139,246.23/137,250.20
  6. Step 6: Final answer
    x = 105,975.36

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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.