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Finding the Fourth Proportional to 104,430.87, 144,189.48 and 64,198.56

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Solution

The fourth proportional to 104,430.87, 144,189.48 and 64,198.56 is: 88,640.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,430.87 : 144,189.48 = 64,198.56 : x
  2. Step 2: Convert to fraction form
    104,430.87/144,189.48 = 64,198.56/x
  3. Step 3: Cross multiply
    104,430.87x = 144,189.48 × 64,198.56
  4. Step 4: Simplify right side
    104,430.87x = 9,256,756,983.15
  5. Step 5: Solve for x
    x = 9,256,756,983.15/104,430.87
  6. Step 6: Final answer
    x = 88,640.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.