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Finding the Fourth Proportional to 110,835.80, 166,253.70 and 77,010.20

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Solution

The fourth proportional to 110,835.80, 166,253.70 and 77,010.20 is: 115,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,835.80 : 166,253.70 = 77,010.20 : x
  2. Step 2: Convert to fraction form
    110,835.80/166,253.70 = 77,010.20/x
  3. Step 3: Cross multiply
    110,835.80x = 166,253.70 × 77,010.20
  4. Step 4: Simplify right side
    110,835.80x = 12,803,230,687.74
  5. Step 5: Solve for x
    x = 12,803,230,687.74/110,835.80
  6. Step 6: Final answer
    x = 115,515.30

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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.