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Finding the Fourth Proportional to 156,980.68, 235,465.80 and 68,234.29

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Solution

The fourth proportional to 156,980.68, 235,465.80 and 68,234.29 is: 102,349.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980.68 : 235,465.80 = 68,234.29 : x
  2. Step 2: Convert to fraction form
    156,980.68/235,465.80 = 68,234.29/x
  3. Step 3: Cross multiply
    156,980.68x = 235,465.80 × 68,234.29
  4. Step 4: Simplify right side
    156,980.68x = 16,066,841,682.28
  5. Step 5: Solve for x
    x = 16,066,841,682.28/156,980.68
  6. Step 6: Final answer
    x = 102,349.17

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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.