Home / 191,418.18-287,105.40-51,187.74

Finding the Fourth Proportional to 191,418.18, 287,105.40 and 51,187.74

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Solution

The fourth proportional to 191,418.18, 287,105.40 and 51,187.74 is: 76,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,418.18 : 287,105.40 = 51,187.74 : x
  2. Step 2: Convert to fraction form
    191,418.18/287,105.40 = 51,187.74/x
  3. Step 3: Cross multiply
    191,418.18x = 287,105.40 × 51,187.74
  4. Step 4: Simplify right side
    191,418.18x = 14,696,276,567.80
  5. Step 5: Solve for x
    x = 14,696,276,567.80/191,418.18
  6. Step 6: Final answer
    x = 76,775.76

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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.