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Finding the Fourth Proportional to 101,289.44, 139,770 and 58,847.36

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Solution

The fourth proportional to 101,289.44, 139,770 and 58,847.36 is: 81,203.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,289.44 : 139,770 = 58,847.36 : x
  2. Step 2: Convert to fraction form
    101,289.44/139,770 = 58,847.36/x
  3. Step 3: Cross multiply
    101,289.44x = 139,770 × 58,847.36
  4. Step 4: Simplify right side
    101,289.44x = 8,225,095,507.20
  5. Step 5: Solve for x
    x = 8,225,095,507.20/101,289.44
  6. Step 6: Final answer
    x = 81,203.88

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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.