Home / 98,918.11-136,489.01-55,311.44

Finding the Fourth Proportional to 98,918.11, 136,489.01 and 55,311.44

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Solution

The fourth proportional to 98,918.11, 136,489.01 and 55,311.44 is: 76,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,918.11 : 136,489.01 = 55,311.44 : x
  2. Step 2: Convert to fraction form
    98,918.11/136,489.01 = 55,311.44/x
  3. Step 3: Cross multiply
    98,918.11x = 136,489.01 × 55,311.44
  4. Step 4: Simplify right side
    98,918.11x = 7,549,403,807.15
  5. Step 5: Solve for x
    x = 7,549,403,807.15/98,918.11
  6. Step 6: Final answer
    x = 76,319.74

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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.