Home / 137,489.20-189,733.39-77,059.76

Finding the Fourth Proportional to 137,489.20, 189,733.39 and 77,059.76

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Solution

The fourth proportional to 137,489.20, 189,733.39 and 77,059.76 is: 106,341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,489.20 : 189,733.39 = 77,059.76 : x
  2. Step 2: Convert to fraction form
    137,489.20/189,733.39 = 77,059.76/x
  3. Step 3: Cross multiply
    137,489.20x = 189,733.39 × 77,059.76
  4. Step 4: Simplify right side
    137,489.20x = 14,620,808,356.07
  5. Step 5: Solve for x
    x = 14,620,808,356.07/137,489.20
  6. Step 6: Final answer
    x = 106,341.51

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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.