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Finding the Fourth Proportional to 101,179.46, 139,627.87 and 55,857.51

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Solution

The fourth proportional to 101,179.46, 139,627.87 and 55,857.51 is: 77,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,179.46 : 139,627.87 = 55,857.51 : x
  2. Step 2: Convert to fraction form
    101,179.46/139,627.87 = 55,857.51/x
  3. Step 3: Cross multiply
    101,179.46x = 139,627.87 × 55,857.51
  4. Step 4: Simplify right side
    101,179.46x = 7,799,265,005.16
  5. Step 5: Solve for x
    x = 7,799,265,005.16/101,179.46
  6. Step 6: Final answer
    x = 77,083.48

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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.