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Finding the Fourth Proportional to 156,999.80, 235,154.10 and 139,489.40

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Solution

The fourth proportional to 156,999.80, 235,154.10 and 139,489.40 is: 208,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,999.80 : 235,154.10 = 139,489.40 : x
  2. Step 2: Convert to fraction form
    156,999.80/235,154.10 = 139,489.40/x
  3. Step 3: Cross multiply
    156,999.80x = 235,154.10 × 139,489.40
  4. Step 4: Simplify right side
    156,999.80x = 32,801,504,316.54
  5. Step 5: Solve for x
    x = 32,801,504,316.54/156,999.80
  6. Step 6: Final answer
    x = 208,927.05

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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.