Home / 154,089.80-231,134.70-79,105.40

Finding the Fourth Proportional to 154,089.80, 231,134.70 and 79,105.40

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Solution

The fourth proportional to 154,089.80, 231,134.70 and 79,105.40 is: 118,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,089.80 : 231,134.70 = 79,105.40 : x
  2. Step 2: Convert to fraction form
    154,089.80/231,134.70 = 79,105.40/x
  3. Step 3: Cross multiply
    154,089.80x = 231,134.70 × 79,105.40
  4. Step 4: Simplify right side
    154,089.80x = 18,284,002,897.38
  5. Step 5: Solve for x
    x = 18,284,002,897.38/154,089.80
  6. Step 6: Final answer
    x = 118,658.10

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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.