Home / 138,815.58-191,565.56-75,153.36

Finding the Fourth Proportional to 138,815.58, 191,565.56 and 75,153.36

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Solution

The fourth proportional to 138,815.58, 191,565.56 and 75,153.36 is: 103,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,815.58 : 191,565.56 = 75,153.36 : x
  2. Step 2: Convert to fraction form
    138,815.58/191,565.56 = 75,153.36/x
  3. Step 3: Cross multiply
    138,815.58x = 191,565.56 × 75,153.36
  4. Step 4: Simplify right side
    138,815.58x = 14,396,795,118.51
  5. Step 5: Solve for x
    x = 14,396,795,118.51/138,815.58
  6. Step 6: Final answer
    x = 103,711.67

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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.