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Finding the Fourth Proportional to 161,881.12, 242,763.36 and 68,394.16

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Solution

The fourth proportional to 161,881.12, 242,763.36 and 68,394.16 is: 102,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,881.12 : 242,763.36 = 68,394.16 : x
  2. Step 2: Convert to fraction form
    161,881.12/242,763.36 = 68,394.16/x
  3. Step 3: Cross multiply
    161,881.12x = 242,763.36 × 68,394.16
  4. Step 4: Simplify right side
    161,881.12x = 16,603,596,085.98
  5. Step 5: Solve for x
    x = 16,603,596,085.98/161,881.12
  6. Step 6: Final answer
    x = 102,566.60

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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.