Home / 191,640.11-287,253.77-91,587.60

Finding the Fourth Proportional to 191,640.11, 287,253.77 and 91,587.60

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Solution

The fourth proportional to 191,640.11, 287,253.77 and 91,587.60 is: 137,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,640.11 : 287,253.77 = 91,587.60 : x
  2. Step 2: Convert to fraction form
    191,640.11/287,253.77 = 91,587.60/x
  3. Step 3: Cross multiply
    191,640.11x = 287,253.77 × 91,587.60
  4. Step 4: Simplify right side
    191,640.11x = 26,308,882,927.31
  5. Step 5: Solve for x
    x = 26,308,882,927.31/191,640.11
  6. Step 6: Final answer
    x = 137,282.76

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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.