Home / 115,406.92-159,261.12-64,419.21

Finding the Fourth Proportional to 115,406.92, 159,261.12 and 64,419.21

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Solution

The fourth proportional to 115,406.92, 159,261.12 and 64,419.21 is: 88,898.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,406.92 : 159,261.12 = 64,419.21 : x
  2. Step 2: Convert to fraction form
    115,406.92/159,261.12 = 64,419.21/x
  3. Step 3: Cross multiply
    115,406.92x = 159,261.12 × 64,419.21
  4. Step 4: Simplify right side
    115,406.92x = 10,259,475,534.12
  5. Step 5: Solve for x
    x = 10,259,475,534.12/115,406.92
  6. Step 6: Final answer
    x = 88,898.27

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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.