Home / 191,439.75-287,137.86-51,209.31

Finding the Fourth Proportional to 191,439.75, 287,137.86 and 51,209.31

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Solution

The fourth proportional to 191,439.75, 287,137.86 and 51,209.31 is: 76,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,439.75 : 287,137.86 = 51,209.31 : x
  2. Step 2: Convert to fraction form
    191,439.75/287,137.86 = 51,209.31/x
  3. Step 3: Cross multiply
    191,439.75x = 287,137.86 × 51,209.31
  4. Step 4: Simplify right side
    191,439.75x = 14,704,131,685.48
  5. Step 5: Solve for x
    x = 14,704,131,685.48/191,439.75
  6. Step 6: Final answer
    x = 76,808.14

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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.