Home / 140,302.78-210,485.32-40,455.20

Finding the Fourth Proportional to 140,302.78, 210,485.32 and 40,455.20

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Solution

The fourth proportional to 140,302.78, 210,485.32 and 40,455.20 is: 60,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,302.78 : 210,485.32 = 40,455.20 : x
  2. Step 2: Convert to fraction form
    140,302.78/210,485.32 = 40,455.20/x
  3. Step 3: Cross multiply
    140,302.78x = 210,485.32 × 40,455.20
  4. Step 4: Simplify right side
    140,302.78x = 8,515,225,717.66
  5. Step 5: Solve for x
    x = 8,515,225,717.66/140,302.78
  6. Step 6: Final answer
    x = 60,691.78

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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.