Home / 112,634.74-155,391.66-72,342.88

Finding the Fourth Proportional to 112,634.74, 155,391.66 and 72,342.88

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Solution

The fourth proportional to 112,634.74, 155,391.66 and 72,342.88 is: 99,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,634.74 : 155,391.66 = 72,342.88 : x
  2. Step 2: Convert to fraction form
    112,634.74/155,391.66 = 72,342.88/x
  3. Step 3: Cross multiply
    112,634.74x = 155,391.66 × 72,342.88
  4. Step 4: Simplify right side
    112,634.74x = 11,241,480,212.38
  5. Step 5: Solve for x
    x = 11,241,480,212.38/112,634.74
  6. Step 6: Final answer
    x = 99,804.73

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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.