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Finding the Fourth Proportional to 126,762.20, 190,153.20 and 56,648.60

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Solution

The fourth proportional to 126,762.20, 190,153.20 and 56,648.60 is: 84,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,762.20 : 190,153.20 = 56,648.60 : x
  2. Step 2: Convert to fraction form
    126,762.20/190,153.20 = 56,648.60/x
  3. Step 3: Cross multiply
    126,762.20x = 190,153.20 × 56,648.60
  4. Step 4: Simplify right side
    126,762.20x = 10,771,912,565.52
  5. Step 5: Solve for x
    x = 10,771,912,565.52/126,762.20
  6. Step 6: Final answer
    x = 84,977.32

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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.