Home / 131,329.08-181,308.78-86,746.68

Finding the Fourth Proportional to 131,329.08, 181,308.78 and 86,746.68

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Solution

The fourth proportional to 131,329.08, 181,308.78 and 86,746.68 is: 119,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,329.08 : 181,308.78 = 86,746.68 : x
  2. Step 2: Convert to fraction form
    131,329.08/181,308.78 = 86,746.68/x
  3. Step 3: Cross multiply
    131,329.08x = 181,308.78 × 86,746.68
  4. Step 4: Simplify right side
    131,329.08x = 15,727,934,719.85
  5. Step 5: Solve for x
    x = 15,727,934,719.85/131,329.08
  6. Step 6: Final answer
    x = 119,759.73

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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.