Home / 131,525.15-181,506.45-77,808.79

Finding the Fourth Proportional to 131,525.15, 181,506.45 and 77,808.79

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Solution

The fourth proportional to 131,525.15, 181,506.45 and 77,808.79 is: 107,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,525.15 : 181,506.45 = 77,808.79 : x
  2. Step 2: Convert to fraction form
    131,525.15/181,506.45 = 77,808.79/x
  3. Step 3: Cross multiply
    131,525.15x = 181,506.45 × 77,808.79
  4. Step 4: Simplify right side
    131,525.15x = 14,122,796,344.16
  5. Step 5: Solve for x
    x = 14,122,796,344.16/131,525.15
  6. Step 6: Final answer
    x = 107,377.15

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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.