Home / 127,785.40-191,715.12-52,891.72

Finding the Fourth Proportional to 127,785.40, 191,715.12 and 52,891.72

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Solution

The fourth proportional to 127,785.40, 191,715.12 and 52,891.72 is: 79,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,785.40 : 191,715.12 = 52,891.72 : x
  2. Step 2: Convert to fraction form
    127,785.40/191,715.12 = 52,891.72/x
  3. Step 3: Cross multiply
    127,785.40x = 191,715.12 × 52,891.72
  4. Step 4: Simplify right side
    127,785.40x = 10,140,142,446.81
  5. Step 5: Solve for x
    x = 10,140,142,446.81/127,785.40
  6. Step 6: Final answer
    x = 79,352.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.