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Finding the Fourth Proportional to 156,699.40, 235,049.10 and 45,891.40

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Solution

The fourth proportional to 156,699.40, 235,049.10 and 45,891.40 is: 68,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,699.40 : 235,049.10 = 45,891.40 : x
  2. Step 2: Convert to fraction form
    156,699.40/235,049.10 = 45,891.40/x
  3. Step 3: Cross multiply
    156,699.40x = 235,049.10 × 45,891.40
  4. Step 4: Simplify right side
    156,699.40x = 10,786,732,267.74
  5. Step 5: Solve for x
    x = 10,786,732,267.74/156,699.40
  6. Step 6: Final answer
    x = 68,837.10

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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.