Home / 153,986.13-231,124.46-79,158.74

Finding the Fourth Proportional to 153,986.13, 231,124.46 and 79,158.74

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Solution

The fourth proportional to 153,986.13, 231,124.46 and 79,158.74 is: 118,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,986.13 : 231,124.46 = 79,158.74 : x
  2. Step 2: Convert to fraction form
    153,986.13/231,124.46 = 79,158.74/x
  3. Step 3: Cross multiply
    153,986.13x = 231,124.46 × 79,158.74
  4. Step 4: Simplify right side
    153,986.13x = 18,295,519,485.36
  5. Step 5: Solve for x
    x = 18,295,519,485.36/153,986.13
  6. Step 6: Final answer
    x = 118,812.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.