Home / 100,249.64-138,281.94-64,486.28

Finding the Fourth Proportional to 100,249.64, 138,281.94 and 64,486.28

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Solution

The fourth proportional to 100,249.64, 138,281.94 and 64,486.28 is: 88,950.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,249.64 : 138,281.94 = 64,486.28 : x
  2. Step 2: Convert to fraction form
    100,249.64/138,281.94 = 64,486.28/x
  3. Step 3: Cross multiply
    100,249.64x = 138,281.94 × 64,486.28
  4. Step 4: Simplify right side
    100,249.64x = 8,917,287,901.78
  5. Step 5: Solve for x
    x = 8,917,287,901.78/100,249.64
  6. Step 6: Final answer
    x = 88,950.82

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1.5x scale

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.