Home / 115,679.70-159,636.85-64,691.84

Finding the Fourth Proportional to 115,679.70, 159,636.85 and 64,691.84

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Solution

The fourth proportional to 115,679.70, 159,636.85 and 64,691.84 is: 89,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,679.70 : 159,636.85 = 64,691.84 : x
  2. Step 2: Convert to fraction form
    115,679.70/159,636.85 = 64,691.84/x
  3. Step 3: Cross multiply
    115,679.70x = 159,636.85 × 64,691.84
  4. Step 4: Simplify right side
    115,679.70x = 10,327,201,795.67
  5. Step 5: Solve for x
    x = 10,327,201,795.67/115,679.70
  6. Step 6: Final answer
    x = 89,274.11

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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.