Home / 112,113.64-154,709.22-61,805.80

Finding the Fourth Proportional to 112,113.64, 154,709.22 and 61,805.80

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Solution

The fourth proportional to 112,113.64, 154,709.22 and 61,805.80 is: 85,287.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,113.64 : 154,709.22 = 61,805.80 : x
  2. Step 2: Convert to fraction form
    112,113.64/154,709.22 = 61,805.80/x
  3. Step 3: Cross multiply
    112,113.64x = 154,709.22 × 61,805.80
  4. Step 4: Simplify right side
    112,113.64x = 9,561,927,109.48
  5. Step 5: Solve for x
    x = 9,561,927,109.48/112,113.64
  6. Step 6: Final answer
    x = 85,287.81

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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.