Home / 131,187.12-181,006.02-76,730.82

Finding the Fourth Proportional to 131,187.12, 181,006.02 and 76,730.82

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Solution

The fourth proportional to 131,187.12, 181,006.02 and 76,730.82 is: 105,869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,187.12 : 181,006.02 = 76,730.82 : x
  2. Step 2: Convert to fraction form
    131,187.12/181,006.02 = 76,730.82/x
  3. Step 3: Cross multiply
    131,187.12x = 181,006.02 × 76,730.82
  4. Step 4: Simplify right side
    131,187.12x = 13,888,740,339.54
  5. Step 5: Solve for x
    x = 13,888,740,339.54/131,187.12
  6. Step 6: Final answer
    x = 105,869.69

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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.