Home / 134,705.76-185,816.80-84,317.28

Finding the Fourth Proportional to 134,705.76, 185,816.80 and 84,317.28

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Solution

The fourth proportional to 134,705.76, 185,816.80 and 84,317.28 is: 116,309.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,705.76 : 185,816.80 = 84,317.28 : x
  2. Step 2: Convert to fraction form
    134,705.76/185,816.80 = 84,317.28/x
  3. Step 3: Cross multiply
    134,705.76x = 185,816.80 × 84,317.28
  4. Step 4: Simplify right side
    134,705.76x = 15,667,567,154.30
  5. Step 5: Solve for x
    x = 15,667,567,154.30/134,705.76
  6. Step 6: Final answer
    x = 116,309.56

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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.