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Finding the Fourth Proportional to 161,807.70, 242,625.15 and 68,207.70

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Solution

The fourth proportional to 161,807.70, 242,625.15 and 68,207.70 is: 102,275.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,807.70 : 242,625.15 = 68,207.70 : x
  2. Step 2: Convert to fraction form
    161,807.70/242,625.15 = 68,207.70/x
  3. Step 3: Cross multiply
    161,807.70x = 242,625.15 × 68,207.70
  4. Step 4: Simplify right side
    161,807.70x = 16,548,903,443.66
  5. Step 5: Solve for x
    x = 16,548,903,443.66/161,807.70
  6. Step 6: Final answer
    x = 102,275.13

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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.