Home / 131,582.78-181,573.25-77,858.42

Finding the Fourth Proportional to 131,582.78, 181,573.25 and 77,858.42

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Solution

The fourth proportional to 131,582.78, 181,573.25 and 77,858.42 is: 107,438.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,582.78 : 181,573.25 = 77,858.42 : x
  2. Step 2: Convert to fraction form
    131,582.78/181,573.25 = 77,858.42/x
  3. Step 3: Cross multiply
    131,582.78x = 181,573.25 × 77,858.42
  4. Step 4: Simplify right side
    131,582.78x = 14,137,005,062.11
  5. Step 5: Solve for x
    x = 14,137,005,062.11/131,582.78
  6. Step 6: Final answer
    x = 107,438.11

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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.