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Finding the Fourth Proportional to 156,970.70, 235,456.05 and 145,450.70

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Solution

The fourth proportional to 156,970.70, 235,456.05 and 145,450.70 is: 218,176.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.70 : 235,456.05 = 145,450.70 : x
  2. Step 2: Convert to fraction form
    156,970.70/235,456.05 = 145,450.70/x
  3. Step 3: Cross multiply
    156,970.70x = 235,456.05 × 145,450.70
  4. Step 4: Simplify right side
    156,970.70x = 34,247,247,291.74
  5. Step 5: Solve for x
    x = 34,247,247,291.74/156,970.70
  6. Step 6: Final answer
    x = 218,176.05

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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.