Home / 89,356.06-133,365.47-87,879.88

Finding the Fourth Proportional to 89,356.06, 133,365.47 and 87,879.88

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Solution

The fourth proportional to 89,356.06, 133,365.47 and 87,879.88 is: 131,162.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,356.06 : 133,365.47 = 87,879.88 : x
  2. Step 2: Convert to fraction form
    89,356.06/133,365.47 = 87,879.88/x
  3. Step 3: Cross multiply
    89,356.06x = 133,365.47 × 87,879.88
  4. Step 4: Simplify right side
    89,356.06x = 11,720,141,499.74
  5. Step 5: Solve for x
    x = 11,720,141,499.74/89,356.06
  6. Step 6: Final answer
    x = 131,162.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.