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Finding the Fourth Proportional to 101,098.82, 139,515.41 and 55,777.17

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Solution

The fourth proportional to 101,098.82, 139,515.41 and 55,777.17 is: 76,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,098.82 : 139,515.41 = 55,777.17 : x
  2. Step 2: Convert to fraction form
    101,098.82/139,515.41 = 55,777.17/x
  3. Step 3: Cross multiply
    101,098.82x = 139,515.41 × 55,777.17
  4. Step 4: Simplify right side
    101,098.82x = 7,781,774,741.19
  5. Step 5: Solve for x
    x = 7,781,774,741.19/101,098.82
  6. Step 6: Final answer
    x = 76,971.96

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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.