Home / 101,221.12-139,549.44-70,965.76

Finding the Fourth Proportional to 101,221.12, 139,549.44 and 70,965.76

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Solution

The fourth proportional to 101,221.12, 139,549.44 and 70,965.76 is: 97,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,221.12 : 139,549.44 = 70,965.76 : x
  2. Step 2: Convert to fraction form
    101,221.12/139,549.44 = 70,965.76/x
  3. Step 3: Cross multiply
    101,221.12x = 139,549.44 × 70,965.76
  4. Step 4: Simplify right side
    101,221.12x = 9,903,232,067.17
  5. Step 5: Solve for x
    x = 9,903,232,067.17/101,221.12
  6. Step 6: Final answer
    x = 97,837.61

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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.