Home / 112,815.36-155,635.20-65,057.28

Finding the Fourth Proportional to 112,815.36, 155,635.20 and 65,057.28

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Solution

The fourth proportional to 112,815.36, 155,635.20 and 65,057.28 is: 89,750.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,815.36 : 155,635.20 = 65,057.28 : x
  2. Step 2: Convert to fraction form
    112,815.36/155,635.20 = 65,057.28/x
  3. Step 3: Cross multiply
    112,815.36x = 155,635.20 × 65,057.28
  4. Step 4: Simplify right side
    112,815.36x = 10,125,202,784.26
  5. Step 5: Solve for x
    x = 10,125,202,784.26/112,815.36
  6. Step 6: Final answer
    x = 89,750.21

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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.