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Finding the Fourth Proportional to 131,445.70, 197,180.70 and 52,543.60

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Solution

The fourth proportional to 131,445.70, 197,180.70 and 52,543.60 is: 78,820.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,445.70 : 197,180.70 = 52,543.60 : x
  2. Step 2: Convert to fraction form
    131,445.70/197,180.70 = 52,543.60/x
  3. Step 3: Cross multiply
    131,445.70x = 197,180.70 × 52,543.60
  4. Step 4: Simplify right side
    131,445.70x = 10,360,583,828.52
  5. Step 5: Solve for x
    x = 10,360,583,828.52/131,445.70
  6. Step 6: Final answer
    x = 78,820.26

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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.