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Finding the Fourth Proportional to 161,643.69, 242,407.20 and 68,156.73

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Solution

The fourth proportional to 161,643.69, 242,407.20 and 68,156.73 is: 102,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,643.69 : 242,407.20 = 68,156.73 : x
  2. Step 2: Convert to fraction form
    161,643.69/242,407.20 = 68,156.73/x
  3. Step 3: Cross multiply
    161,643.69x = 242,407.20 × 68,156.73
  4. Step 4: Simplify right side
    161,643.69x = 16,521,682,080.46
  5. Step 5: Solve for x
    x = 16,521,682,080.46/161,643.69
  6. Step 6: Final answer
    x = 102,210.50

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1.5x scale

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.