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Finding the Fourth Proportional to 145,222.89, 200,384.06 and 90,768.62

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Solution

The fourth proportional to 145,222.89, 200,384.06 and 90,768.62 is: 125,245.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,222.89 : 200,384.06 = 90,768.62 : x
  2. Step 2: Convert to fraction form
    145,222.89/200,384.06 = 90,768.62/x
  3. Step 3: Cross multiply
    145,222.89x = 200,384.06 × 90,768.62
  4. Step 4: Simplify right side
    145,222.89x = 18,188,583,140.43
  5. Step 5: Solve for x
    x = 18,188,583,140.43/145,222.89
  6. Step 6: Final answer
    x = 125,245.98

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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.