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Finding the Fourth Proportional to 99,289.80, 148,934.70 and 92,680.20

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Solution

The fourth proportional to 99,289.80, 148,934.70 and 92,680.20 is: 139,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,289.80 : 148,934.70 = 92,680.20 : x
  2. Step 2: Convert to fraction form
    99,289.80/148,934.70 = 92,680.20/x
  3. Step 3: Cross multiply
    99,289.80x = 148,934.70 × 92,680.20
  4. Step 4: Simplify right side
    99,289.80x = 13,803,297,782.94
  5. Step 5: Solve for x
    x = 13,803,297,782.94/99,289.80
  6. Step 6: Final answer
    x = 139,020.30

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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.