Home / 103,529.72-142,906.20-71,740.46

Finding the Fourth Proportional to 103,529.72, 142,906.20 and 71,740.46

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Solution

The fourth proportional to 103,529.72, 142,906.20 and 71,740.46 is: 99,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,529.72 : 142,906.20 = 71,740.46 : x
  2. Step 2: Convert to fraction form
    103,529.72/142,906.20 = 71,740.46/x
  3. Step 3: Cross multiply
    103,529.72x = 142,906.20 × 71,740.46
  4. Step 4: Simplify right side
    103,529.72x = 10,252,156,524.85
  5. Step 5: Solve for x
    x = 10,252,156,524.85/103,529.72
  6. Step 6: Final answer
    x = 99,026.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.