Home / 191,969.38-287,999.43-86,788.18

Finding the Fourth Proportional to 191,969.38, 287,999.43 and 86,788.18

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Solution

The fourth proportional to 191,969.38, 287,999.43 and 86,788.18 is: 130,202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,969.38 : 287,999.43 = 86,788.18 : x
  2. Step 2: Convert to fraction form
    191,969.38/287,999.43 = 86,788.18/x
  3. Step 3: Cross multiply
    191,969.38x = 287,999.43 × 86,788.18
  4. Step 4: Simplify right side
    191,969.38x = 24,994,946,370.74
  5. Step 5: Solve for x
    x = 24,994,946,370.74/191,969.38
  6. Step 6: Final answer
    x = 130,202.78

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1.5x scale

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.