Home / 115,322.18-159,144.63-65,021.18

Finding the Fourth Proportional to 115,322.18, 159,144.63 and 65,021.18

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Solution

The fourth proportional to 115,322.18, 159,144.63 and 65,021.18 is: 89,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,322.18 : 159,144.63 = 65,021.18 : x
  2. Step 2: Convert to fraction form
    115,322.18/159,144.63 = 65,021.18/x
  3. Step 3: Cross multiply
    115,322.18x = 159,144.63 × 65,021.18
  4. Step 4: Simplify right side
    115,322.18x = 10,347,771,633.26
  5. Step 5: Solve for x
    x = 10,347,771,633.26/115,322.18
  6. Step 6: Final answer
    x = 89,729.24

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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.