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Finding the Fourth Proportional to 101,015.66, 139,401.42 and 55,693.32

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Solution

The fourth proportional to 101,015.66, 139,401.42 and 55,693.32 is: 76,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,015.66 : 139,401.42 = 55,693.32 : x
  2. Step 2: Convert to fraction form
    101,015.66/139,401.42 = 55,693.32/x
  3. Step 3: Cross multiply
    101,015.66x = 139,401.42 × 55,693.32
  4. Step 4: Simplify right side
    101,015.66x = 7,763,727,683.66
  5. Step 5: Solve for x
    x = 7,763,727,683.66/101,015.66
  6. Step 6: Final answer
    x = 76,856.68

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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.