Home / 100,582.65-138,795.75-55,258.29

Finding the Fourth Proportional to 100,582.65, 138,795.75 and 55,258.29

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Solution

The fourth proportional to 100,582.65, 138,795.75 and 55,258.29 is: 76,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,582.65 : 138,795.75 = 55,258.29 : x
  2. Step 2: Convert to fraction form
    100,582.65/138,795.75 = 55,258.29/x
  3. Step 3: Cross multiply
    100,582.65x = 138,795.75 × 55,258.29
  4. Step 4: Simplify right side
    100,582.65x = 7,669,615,804.27
  5. Step 5: Solve for x
    x = 7,669,615,804.27/100,582.65
  6. Step 6: Final answer
    x = 76,251.88

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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.