Home / 106,306.72-145,640.92-102,320.80

Finding the Fourth Proportional to 106,306.72, 145,640.92 and 102,320.80

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Solution

The fourth proportional to 106,306.72, 145,640.92 and 102,320.80 is: 140,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,306.72 : 145,640.92 = 102,320.80 : x
  2. Step 2: Convert to fraction form
    106,306.72/145,640.92 = 102,320.80/x
  3. Step 3: Cross multiply
    106,306.72x = 145,640.92 × 102,320.80
  4. Step 4: Simplify right side
    106,306.72x = 14,902,095,447.14
  5. Step 5: Solve for x
    x = 14,902,095,447.14/106,306.72
  6. Step 6: Final answer
    x = 140,180.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.