Home / 131,717.40-181,758.51-77,992.80

Finding the Fourth Proportional to 131,717.40, 181,758.51 and 77,992.80

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Solution

The fourth proportional to 131,717.40, 181,758.51 and 77,992.80 is: 107,623.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,717.40 : 181,758.51 = 77,992.80 : x
  2. Step 2: Convert to fraction form
    131,717.40/181,758.51 = 77,992.80/x
  3. Step 3: Cross multiply
    131,717.40x = 181,758.51 × 77,992.80
  4. Step 4: Simplify right side
    131,717.40x = 14,175,855,118.73
  5. Step 5: Solve for x
    x = 14,175,855,118.73/131,717.40
  6. Step 6: Final answer
    x = 107,623.25

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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.