Home / 74,153.15-102,330.82-40,160.85

Finding the Fourth Proportional to 74,153.15, 102,330.82 and 40,160.85

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Solution

The fourth proportional to 74,153.15, 102,330.82 and 40,160.85 is: 55,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,153.15 : 102,330.82 = 40,160.85 : x
  2. Step 2: Convert to fraction form
    74,153.15/102,330.82 = 40,160.85/x
  3. Step 3: Cross multiply
    74,153.15x = 102,330.82 × 40,160.85
  4. Step 4: Simplify right side
    74,153.15x = 4,109,692,611.99
  5. Step 5: Solve for x
    x = 4,109,692,611.99/74,153.15
  6. Step 6: Final answer
    x = 55,421.69

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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.