Home / 112,112.64-154,707.84-61,804.80

Finding the Fourth Proportional to 112,112.64, 154,707.84 and 61,804.80

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Solution

The fourth proportional to 112,112.64, 154,707.84 and 61,804.80 is: 85,286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,112.64 : 154,707.84 = 61,804.80 : x
  2. Step 2: Convert to fraction form
    112,112.64/154,707.84 = 61,804.80/x
  3. Step 3: Cross multiply
    112,112.64x = 154,707.84 × 61,804.80
  4. Step 4: Simplify right side
    112,112.64x = 9,561,687,109.63
  5. Step 5: Solve for x
    x = 9,561,687,109.63/112,112.64
  6. Step 6: Final answer
    x = 85,286.43

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1.5x scale

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.