Home / 142,886.63-197,093.18-91,811.55

Finding the Fourth Proportional to 142,886.63, 197,093.18 and 91,811.55

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Solution

The fourth proportional to 142,886.63, 197,093.18 and 91,811.55 is: 126,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,886.63 : 197,093.18 = 91,811.55 : x
  2. Step 2: Convert to fraction form
    142,886.63/197,093.18 = 91,811.55/x
  3. Step 3: Cross multiply
    142,886.63x = 197,093.18 × 91,811.55
  4. Step 4: Simplify right side
    142,886.63x = 18,095,431,245.41
  5. Step 5: Solve for x
    x = 18,095,431,245.41/142,886.63
  6. Step 6: Final answer
    x = 126,641.88

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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.