Home / 115,288.12-159,096.18-64,987.12

Finding the Fourth Proportional to 115,288.12, 159,096.18 and 64,987.12

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Solution

The fourth proportional to 115,288.12, 159,096.18 and 64,987.12 is: 89,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,288.12 : 159,096.18 = 64,987.12 : x
  2. Step 2: Convert to fraction form
    115,288.12/159,096.18 = 64,987.12/x
  3. Step 3: Cross multiply
    115,288.12x = 159,096.18 × 64,987.12
  4. Step 4: Simplify right side
    115,288.12x = 10,339,202,541.20
  5. Step 5: Solve for x
    x = 10,339,202,541.20/115,288.12
  6. Step 6: Final answer
    x = 89,681.42

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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.