Home / 115,239-159,029.82-64,939.80

Finding the Fourth Proportional to 115,239, 159,029.82 and 64,939.80

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Solution

The fourth proportional to 115,239, 159,029.82 and 64,939.80 is: 89,616.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,239 : 159,029.82 = 64,939.80 : x
  2. Step 2: Convert to fraction form
    115,239/159,029.82 = 64,939.80/x
  3. Step 3: Cross multiply
    115,239x = 159,029.82 × 64,939.80
  4. Step 4: Simplify right side
    115,239x = 10,327,364,704.84
  5. Step 5: Solve for x
    x = 10,327,364,704.84/115,239
  6. Step 6: Final answer
    x = 89,616.92

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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.