Home / 107,519.04-161,159.04-81,138.24

Finding the Fourth Proportional to 107,519.04, 161,159.04 and 81,138.24

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Solution

The fourth proportional to 107,519.04, 161,159.04 and 81,138.24 is: 121,617.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,519.04 : 161,159.04 = 81,138.24 : x
  2. Step 2: Convert to fraction form
    107,519.04/161,159.04 = 81,138.24/x
  3. Step 3: Cross multiply
    107,519.04x = 161,159.04 × 81,138.24
  4. Step 4: Simplify right side
    107,519.04x = 13,076,160,865.69
  5. Step 5: Solve for x
    x = 13,076,160,865.69/107,519.04
  6. Step 6: Final answer
    x = 121,617.17

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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.