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Finding the Fourth Proportional to 92,864.80, 139,066.80 and 74,432.80

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Solution

The fourth proportional to 92,864.80, 139,066.80 and 74,432.80 is: 111,464.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,864.80 : 139,066.80 = 74,432.80 : x
  2. Step 2: Convert to fraction form
    92,864.80/139,066.80 = 74,432.80/x
  3. Step 3: Cross multiply
    92,864.80x = 139,066.80 × 74,432.80
  4. Step 4: Simplify right side
    92,864.80x = 10,351,131,311.04
  5. Step 5: Solve for x
    x = 10,351,131,311.04/92,864.80
  6. Step 6: Final answer
    x = 111,464.53

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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.