Home / 80,798.19-121,009.37-77,995.05

Finding the Fourth Proportional to 80,798.19, 121,009.37 and 77,995.05

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Solution

The fourth proportional to 80,798.19, 121,009.37 and 77,995.05 is: 116,811.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798.19 : 121,009.37 = 77,995.05 : x
  2. Step 2: Convert to fraction form
    80,798.19/121,009.37 = 77,995.05/x
  3. Step 3: Cross multiply
    80,798.19x = 121,009.37 × 77,995.05
  4. Step 4: Simplify right side
    80,798.19x = 9,438,131,473.64
  5. Step 5: Solve for x
    x = 9,438,131,473.64/80,798.19
  6. Step 6: Final answer
    x = 116,811.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.