Home / 178,830.15-268,185.99-72,186.57

Finding the Fourth Proportional to 178,830.15, 268,185.99 and 72,186.57

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Solution

The fourth proportional to 178,830.15, 268,185.99 and 72,186.57 is: 108,255.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,830.15 : 268,185.99 = 72,186.57 : x
  2. Step 2: Convert to fraction form
    178,830.15/268,185.99 = 72,186.57/x
  3. Step 3: Cross multiply
    178,830.15x = 268,185.99 × 72,186.57
  4. Step 4: Simplify right side
    178,830.15x = 19,359,426,740.15
  5. Step 5: Solve for x
    x = 19,359,426,740.15/178,830.15
  6. Step 6: Final answer
    x = 108,255.94

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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.