Home / 115,905.74-159,939.16-65,604.74

Finding the Fourth Proportional to 115,905.74, 159,939.16 and 65,604.74

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Solution

The fourth proportional to 115,905.74, 159,939.16 and 65,604.74 is: 90,528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,905.74 : 159,939.16 = 65,604.74 : x
  2. Step 2: Convert to fraction form
    115,905.74/159,939.16 = 65,604.74/x
  3. Step 3: Cross multiply
    115,905.74x = 159,939.16 × 65,604.74
  4. Step 4: Simplify right side
    115,905.74x = 10,492,766,043.91
  5. Step 5: Solve for x
    x = 10,492,766,043.91/115,905.74
  6. Step 6: Final answer
    x = 90,528.45

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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.