Home / 191,156.48-286,769.20-78,774.15

Finding the Fourth Proportional to 191,156.48, 286,769.20 and 78,774.15

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Solution

The fourth proportional to 191,156.48, 286,769.20 and 78,774.15 is: 118,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,156.48 : 286,769.20 = 78,774.15 : x
  2. Step 2: Convert to fraction form
    191,156.48/286,769.20 = 78,774.15/x
  3. Step 3: Cross multiply
    191,156.48x = 286,769.20 × 78,774.15
  4. Step 4: Simplify right side
    191,156.48x = 22,589,998,900.80
  5. Step 5: Solve for x
    x = 22,589,998,900.80/191,156.48
  6. Step 6: Final answer
    x = 118,175.43

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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.