Home / 131,430.20-197,174.10-42,668.60

Finding the Fourth Proportional to 131,430.20, 197,174.10 and 42,668.60

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Solution

The fourth proportional to 131,430.20, 197,174.10 and 42,668.60 is: 64,012.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.20 : 197,174.10 = 42,668.60 : x
  2. Step 2: Convert to fraction form
    131,430.20/197,174.10 = 42,668.60/x
  3. Step 3: Cross multiply
    131,430.20x = 197,174.10 × 42,668.60
  4. Step 4: Simplify right side
    131,430.20x = 8,413,142,803.26
  5. Step 5: Solve for x
    x = 8,413,142,803.26/131,430.20
  6. Step 6: Final answer
    x = 64,012.25

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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.