Home / 115,868.48-159,885.27-64,874.12

Finding the Fourth Proportional to 115,868.48, 159,885.27 and 64,874.12

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Solution

The fourth proportional to 115,868.48, 159,885.27 and 64,874.12 is: 89,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,868.48 : 159,885.27 = 64,874.12 : x
  2. Step 2: Convert to fraction form
    115,868.48/159,885.27 = 64,874.12/x
  3. Step 3: Cross multiply
    115,868.48x = 159,885.27 × 64,874.12
  4. Step 4: Simplify right side
    115,868.48x = 10,372,415,392.79
  5. Step 5: Solve for x
    x = 10,372,415,392.79/115,868.48
  6. Step 6: Final answer
    x = 89,518.87

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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.