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Finding the Fourth Proportional to 119,358.84, 178,999.98 and 39,378.88

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Solution

The fourth proportional to 119,358.84, 178,999.98 and 39,378.88 is: 59,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,358.84 : 178,999.98 = 39,378.88 : x
  2. Step 2: Convert to fraction form
    119,358.84/178,999.98 = 39,378.88/x
  3. Step 3: Cross multiply
    119,358.84x = 178,999.98 × 39,378.88
  4. Step 4: Simplify right side
    119,358.84x = 7,048,818,732.42
  5. Step 5: Solve for x
    x = 7,048,818,732.42/119,358.84
  6. Step 6: Final answer
    x = 59,055.69

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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.