Home / 191,442.15-287,141.40-51,211.71

Finding the Fourth Proportional to 191,442.15, 287,141.40 and 51,211.71

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Solution

The fourth proportional to 191,442.15, 287,141.40 and 51,211.71 is: 76,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,442.15 : 287,141.40 = 51,211.71 : x
  2. Step 2: Convert to fraction form
    191,442.15/287,141.40 = 51,211.71/x
  3. Step 3: Cross multiply
    191,442.15x = 287,141.40 × 51,211.71
  4. Step 4: Simplify right side
    191,442.15x = 14,705,002,105.79
  5. Step 5: Solve for x
    x = 14,705,002,105.79/191,442.15
  6. Step 6: Final answer
    x = 76,811.73

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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.