Home / 98,621.68-136,090.56-56,171.92

Finding the Fourth Proportional to 98,621.68, 136,090.56 and 56,171.92

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Solution

The fourth proportional to 98,621.68, 136,090.56 and 56,171.92 is: 77,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,621.68 : 136,090.56 = 56,171.92 : x
  2. Step 2: Convert to fraction form
    98,621.68/136,090.56 = 56,171.92/x
  3. Step 3: Cross multiply
    98,621.68x = 136,090.56 × 56,171.92
  4. Step 4: Simplify right side
    98,621.68x = 7,644,468,049.08
  5. Step 5: Solve for x
    x = 7,644,468,049.08/98,621.68
  6. Step 6: Final answer
    x = 77,513.06

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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.