Home / 115,304.28-159,120.84-64,315.32

Finding the Fourth Proportional to 115,304.28, 159,120.84 and 64,315.32

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Solution

The fourth proportional to 115,304.28, 159,120.84 and 64,315.32 is: 88,755.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,304.28 : 159,120.84 = 64,315.32 : x
  2. Step 2: Convert to fraction form
    115,304.28/159,120.84 = 64,315.32/x
  3. Step 3: Cross multiply
    115,304.28x = 159,120.84 × 64,315.32
  4. Step 4: Simplify right side
    115,304.28x = 10,233,907,743.27
  5. Step 5: Solve for x
    x = 10,233,907,743.27/115,304.28
  6. Step 6: Final answer
    x = 88,755.66

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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.