Home / 138,898.32-191,679.60-75,235.96

Finding the Fourth Proportional to 138,898.32, 191,679.60 and 75,235.96

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Solution

The fourth proportional to 138,898.32, 191,679.60 and 75,235.96 is: 103,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,898.32 : 191,679.60 = 75,235.96 : x
  2. Step 2: Convert to fraction form
    138,898.32/191,679.60 = 75,235.96/x
  3. Step 3: Cross multiply
    138,898.32x = 191,679.60 × 75,235.96
  4. Step 4: Simplify right side
    138,898.32x = 14,421,198,718.42
  5. Step 5: Solve for x
    x = 14,421,198,718.42/138,898.32
  6. Step 6: Final answer
    x = 103,825.58

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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.