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Finding the Fourth Proportional to 115,751.48, 159,744.96 and 64,769.00

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Solution

The fourth proportional to 115,751.48, 159,744.96 and 64,769.00 is: 89,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,751.48 : 159,744.96 = 64,769.00 : x
  2. Step 2: Convert to fraction form
    115,751.48/159,744.96 = 64,769.00/x
  3. Step 3: Cross multiply
    115,751.48x = 159,744.96 × 64,769.00
  4. Step 4: Simplify right side
    115,751.48x = 10,346,520,515.52
  5. Step 5: Solve for x
    x = 10,346,520,515.52/115,751.48
  6. Step 6: Final answer
    x = 89,385.65

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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.