Home / 115,108.09-158,873.67-77,360.47

Finding the Fourth Proportional to 115,108.09, 158,873.67 and 77,360.47

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Solution

The fourth proportional to 115,108.09, 158,873.67 and 77,360.47 is: 106,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,108.09 : 158,873.67 = 77,360.47 : x
  2. Step 2: Convert to fraction form
    115,108.09/158,873.67 = 77,360.47/x
  3. Step 3: Cross multiply
    115,108.09x = 158,873.67 × 77,360.47
  4. Step 4: Simplify right side
    115,108.09x = 12,290,540,600.65
  5. Step 5: Solve for x
    x = 12,290,540,600.65/115,108.09
  6. Step 6: Final answer
    x = 106,773.91

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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.