Home / 68,178.02-102,272.95-20,803.78

Finding the Fourth Proportional to 68,178.02, 102,272.95 and 20,803.78

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Solution

The fourth proportional to 68,178.02, 102,272.95 and 20,803.78 is: 31,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,178.02 : 102,272.95 = 20,803.78 : x
  2. Step 2: Convert to fraction form
    68,178.02/102,272.95 = 20,803.78/x
  3. Step 3: Cross multiply
    68,178.02x = 102,272.95 × 20,803.78
  4. Step 4: Simplify right side
    68,178.02x = 2,127,663,960.55
  5. Step 5: Solve for x
    x = 2,127,663,960.55/68,178.02
  6. Step 6: Final answer
    x = 31,207.48

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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.