Home / 112,982.22-155,908.74-64,589.40

Finding the Fourth Proportional to 112,982.22, 155,908.74 and 64,589.40

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Solution

The fourth proportional to 112,982.22, 155,908.74 and 64,589.40 is: 89,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,982.22 : 155,908.74 = 64,589.40 : x
  2. Step 2: Convert to fraction form
    112,982.22/155,908.74 = 64,589.40/x
  3. Step 3: Cross multiply
    112,982.22x = 155,908.74 × 64,589.40
  4. Step 4: Simplify right side
    112,982.22x = 10,070,051,971.36
  5. Step 5: Solve for x
    x = 10,070,051,971.36/112,982.22
  6. Step 6: Final answer
    x = 89,129.53

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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.