Home / 109,406.64-151,009.26-71,261.26

Finding the Fourth Proportional to 109,406.64, 151,009.26 and 71,261.26

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Solution

The fourth proportional to 109,406.64, 151,009.26 and 71,261.26 is: 98,358.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,406.64 : 151,009.26 = 71,261.26 : x
  2. Step 2: Convert to fraction form
    109,406.64/151,009.26 = 71,261.26/x
  3. Step 3: Cross multiply
    109,406.64x = 151,009.26 × 71,261.26
  4. Step 4: Simplify right side
    109,406.64x = 10,761,110,139.27
  5. Step 5: Solve for x
    x = 10,761,110,139.27/109,406.64
  6. Step 6: Final answer
    x = 98,358.84

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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.