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Finding the Fourth Proportional to 119,311.32, 178,928.94 and 39,334.38

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Solution

The fourth proportional to 119,311.32, 178,928.94 and 39,334.38 is: 58,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,311.32 : 178,928.94 = 39,334.38 : x
  2. Step 2: Convert to fraction form
    119,311.32/178,928.94 = 39,334.38/x
  3. Step 3: Cross multiply
    119,311.32x = 178,928.94 × 39,334.38
  4. Step 4: Simplify right side
    119,311.32x = 7,038,059,066.46
  5. Step 5: Solve for x
    x = 7,038,059,066.46/119,311.32
  6. Step 6: Final answer
    x = 58,989.03

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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.