Home / 138,573.79-191,231.86-74,911.57

Finding the Fourth Proportional to 138,573.79, 191,231.86 and 74,911.57

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Solution

The fourth proportional to 138,573.79, 191,231.86 and 74,911.57 is: 103,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,573.79 : 191,231.86 = 74,911.57 : x
  2. Step 2: Convert to fraction form
    138,573.79/191,231.86 = 74,911.57/x
  3. Step 3: Cross multiply
    138,573.79x = 191,231.86 × 74,911.57
  4. Step 4: Simplify right side
    138,573.79x = 14,325,478,866.62
  5. Step 5: Solve for x
    x = 14,325,478,866.62/138,573.79
  6. Step 6: Final answer
    x = 103,377.98

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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.