Home / 191,815.70-287,809.95-91,937.30

Finding the Fourth Proportional to 191,815.70, 287,809.95 and 91,937.30

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Solution

The fourth proportional to 191,815.70, 287,809.95 and 91,937.30 is: 137,947.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,815.70 : 287,809.95 = 91,937.30 : x
  2. Step 2: Convert to fraction form
    191,815.70/287,809.95 = 91,937.30/x
  3. Step 3: Cross multiply
    191,815.70x = 287,809.95 × 91,937.30
  4. Step 4: Simplify right side
    191,815.70x = 26,460,469,716.14
  5. Step 5: Solve for x
    x = 26,460,469,716.14/191,815.70
  6. Step 6: Final answer
    x = 137,947.36

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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.