Home / 103,768.20-155,652.30-61,777.80

Finding the Fourth Proportional to 103,768.20, 155,652.30 and 61,777.80

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Solution

The fourth proportional to 103,768.20, 155,652.30 and 61,777.80 is: 92,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.20 : 155,652.30 = 61,777.80 : x
  2. Step 2: Convert to fraction form
    103,768.20/155,652.30 = 61,777.80/x
  3. Step 3: Cross multiply
    103,768.20x = 155,652.30 × 61,777.80
  4. Step 4: Simplify right side
    103,768.20x = 9,615,856,658.94
  5. Step 5: Solve for x
    x = 9,615,856,658.94/103,768.20
  6. Step 6: Final answer
    x = 92,666.70

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1.5x scale

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.