Home / 191,788.05-287,779.25-127,789.94

Finding the Fourth Proportional to 191,788.05, 287,779.25 and 127,789.94

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Solution

The fourth proportional to 191,788.05, 287,779.25 and 127,789.94 is: 191,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,788.05 : 287,779.25 = 127,789.94 : x
  2. Step 2: Convert to fraction form
    191,788.05/287,779.25 = 127,789.94/x
  3. Step 3: Cross multiply
    191,788.05x = 287,779.25 × 127,789.94
  4. Step 4: Simplify right side
    191,788.05x = 36,775,291,012.90
  5. Step 5: Solve for x
    x = 36,775,291,012.90/191,788.05
  6. Step 6: Final answer
    x = 191,749.65

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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.