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Finding the Fourth Proportional to 131,430.60, 197,174.70 and 64,902.60

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Solution

The fourth proportional to 131,430.60, 197,174.70 and 64,902.60 is: 97,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.60 : 197,174.70 = 64,902.60 : x
  2. Step 2: Convert to fraction form
    131,430.60/197,174.70 = 64,902.60/x
  3. Step 3: Cross multiply
    131,430.60x = 197,174.70 × 64,902.60
  4. Step 4: Simplify right side
    131,430.60x = 12,797,150,684.22
  5. Step 5: Solve for x
    x = 12,797,150,684.22/131,430.60
  6. Step 6: Final answer
    x = 97,368.12

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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.