Home / 98,678.64-136,167.72-55,661.28

Finding the Fourth Proportional to 98,678.64, 136,167.72 and 55,661.28

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Solution

The fourth proportional to 98,678.64, 136,167.72 and 55,661.28 is: 76,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,678.64 : 136,167.72 = 55,661.28 : x
  2. Step 2: Convert to fraction form
    98,678.64/136,167.72 = 55,661.28/x
  3. Step 3: Cross multiply
    98,678.64x = 136,167.72 × 55,661.28
  4. Step 4: Simplify right side
    98,678.64x = 7,579,269,589.88
  5. Step 5: Solve for x
    x = 7,579,269,589.88/98,678.64
  6. Step 6: Final answer
    x = 76,807.60

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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.