Home / 115,881.88-159,919.26-75,621.40

Finding the Fourth Proportional to 115,881.88, 159,919.26 and 75,621.40

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Solution

The fourth proportional to 115,881.88, 159,919.26 and 75,621.40 is: 104,359.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,881.88 : 159,919.26 = 75,621.40 : x
  2. Step 2: Convert to fraction form
    115,881.88/159,919.26 = 75,621.40/x
  3. Step 3: Cross multiply
    115,881.88x = 159,919.26 × 75,621.40
  4. Step 4: Simplify right side
    115,881.88x = 12,093,318,328.16
  5. Step 5: Solve for x
    x = 12,093,318,328.16/115,881.88
  6. Step 6: Final answer
    x = 104,359.01

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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.