Home / 138,576.60-191,234.52-74,913.84

Finding the Fourth Proportional to 138,576.60, 191,234.52 and 74,913.84

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Solution

The fourth proportional to 138,576.60, 191,234.52 and 74,913.84 is: 103,380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,576.60 : 191,234.52 = 74,913.84 : x
  2. Step 2: Convert to fraction form
    138,576.60/191,234.52 = 74,913.84/x
  3. Step 3: Cross multiply
    138,576.60x = 191,234.52 × 74,913.84
  4. Step 4: Simplify right side
    138,576.60x = 14,326,112,233.76
  5. Step 5: Solve for x
    x = 14,326,112,233.76/138,576.60
  6. Step 6: Final answer
    x = 103,380.46

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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.