Home / 161,669.12-242,530.68-72,920.66

Finding the Fourth Proportional to 161,669.12, 242,530.68 and 72,920.66

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Solution

The fourth proportional to 161,669.12, 242,530.68 and 72,920.66 is: 109,393.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,669.12 : 242,530.68 = 72,920.66 : x
  2. Step 2: Convert to fraction form
    161,669.12/242,530.68 = 72,920.66/x
  3. Step 3: Cross multiply
    161,669.12x = 242,530.68 × 72,920.66
  4. Step 4: Simplify right side
    161,669.12x = 17,685,497,255.85
  5. Step 5: Solve for x
    x = 17,685,497,255.85/161,669.12
  6. Step 6: Final answer
    x = 109,393.17

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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.