Home / 191,986.07-287,856.05-79,743.74

Finding the Fourth Proportional to 191,986.07, 287,856.05 and 79,743.74

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Solution

The fourth proportional to 191,986.07, 287,856.05 and 79,743.74 is: 119,564.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,986.07 : 287,856.05 = 79,743.74 : x
  2. Step 2: Convert to fraction form
    191,986.07/287,856.05 = 79,743.74/x
  3. Step 3: Cross multiply
    191,986.07x = 287,856.05 × 79,743.74
  4. Step 4: Simplify right side
    191,986.07x = 22,954,716,170.63
  5. Step 5: Solve for x
    x = 22,954,716,170.63/191,986.07
  6. Step 6: Final answer
    x = 119,564.49

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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.