Home / 115,740.69-159,789.07-77,008.92

Finding the Fourth Proportional to 115,740.69, 159,789.07 and 77,008.92

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Solution

The fourth proportional to 115,740.69, 159,789.07 and 77,008.92 is: 106,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,740.69 : 159,789.07 = 77,008.92 : x
  2. Step 2: Convert to fraction form
    115,740.69/159,789.07 = 77,008.92/x
  3. Step 3: Cross multiply
    115,740.69x = 159,789.07 × 77,008.92
  4. Step 4: Simplify right side
    115,740.69x = 12,305,183,708.50
  5. Step 5: Solve for x
    x = 12,305,183,708.50/115,740.69
  6. Step 6: Final answer
    x = 106,316.83

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1.5x scale

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.