Home / 131,866.14-181,971.50-77,417.42

Finding the Fourth Proportional to 131,866.14, 181,971.50 and 77,417.42

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Solution

The fourth proportional to 131,866.14, 181,971.50 and 77,417.42 is: 106,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,866.14 : 181,971.50 = 77,417.42 : x
  2. Step 2: Convert to fraction form
    131,866.14/181,971.50 = 77,417.42/x
  3. Step 3: Cross multiply
    131,866.14x = 181,971.50 × 77,417.42
  4. Step 4: Simplify right side
    131,866.14x = 14,087,764,043.53
  5. Step 5: Solve for x
    x = 14,087,764,043.53/131,866.14
  6. Step 6: Final answer
    x = 106,833.82

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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.