Home / 138,934.72-191,730.64-75,272.64

Finding the Fourth Proportional to 138,934.72, 191,730.64 and 75,272.64

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Solution

The fourth proportional to 138,934.72, 191,730.64 and 75,272.64 is: 103,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.72 : 191,730.64 = 75,272.64 : x
  2. Step 2: Convert to fraction form
    138,934.72/191,730.64 = 75,272.64/x
  3. Step 3: Cross multiply
    138,934.72x = 191,730.64 × 75,272.64
  4. Step 4: Simplify right side
    138,934.72x = 14,432,071,441.69
  5. Step 5: Solve for x
    x = 14,432,071,441.69/138,934.72
  6. Step 6: Final answer
    x = 103,876.64

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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.