Home / 101,739.81-151,990.86-65,909.46

Finding the Fourth Proportional to 101,739.81, 151,990.86 and 65,909.46

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Solution

The fourth proportional to 101,739.81, 151,990.86 and 65,909.46 is: 98,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,739.81 : 151,990.86 = 65,909.46 : x
  2. Step 2: Convert to fraction form
    101,739.81/151,990.86 = 65,909.46/x
  3. Step 3: Cross multiply
    101,739.81x = 151,990.86 × 65,909.46
  4. Step 4: Simplify right side
    101,739.81x = 10,017,635,507.54
  5. Step 5: Solve for x
    x = 10,017,635,507.54/101,739.81
  6. Step 6: Final answer
    x = 98,463.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.