Home / 98,742.24-136,255.80-55,719.36

Finding the Fourth Proportional to 98,742.24, 136,255.80 and 55,719.36

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Solution

The fourth proportional to 98,742.24, 136,255.80 and 55,719.36 is: 76,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,742.24 : 136,255.80 = 55,719.36 : x
  2. Step 2: Convert to fraction form
    98,742.24/136,255.80 = 55,719.36/x
  3. Step 3: Cross multiply
    98,742.24x = 136,255.80 × 55,719.36
  4. Step 4: Simplify right side
    98,742.24x = 7,592,085,972.29
  5. Step 5: Solve for x
    x = 7,592,085,972.29/98,742.24
  6. Step 6: Final answer
    x = 76,887.93

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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.