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Finding the Fourth Proportional to 101,096.79, 139,512.68 and 55,775.17

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Solution

The fourth proportional to 101,096.79, 139,512.68 and 55,775.17 is: 76,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,096.79 : 139,512.68 = 55,775.17 : x
  2. Step 2: Convert to fraction form
    101,096.79/139,512.68 = 55,775.17/x
  3. Step 3: Cross multiply
    101,096.79x = 139,512.68 × 55,775.17
  4. Step 4: Simplify right side
    101,096.79x = 7,781,342,816.50
  5. Step 5: Solve for x
    x = 7,781,342,816.50/101,096.79
  6. Step 6: Final answer
    x = 76,969.24

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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.