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Finding the Fourth Proportional to 119,330.76, 178,986.76 and 69,379

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Solution

The fourth proportional to 119,330.76, 178,986.76 and 69,379 is: 104,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,330.76 : 178,986.76 = 69,379 : x
  2. Step 2: Convert to fraction form
    119,330.76/178,986.76 = 69,379/x
  3. Step 3: Cross multiply
    119,330.76x = 178,986.76 × 69,379
  4. Step 4: Simplify right side
    119,330.76x = 12,417,922,422.04
  5. Step 5: Solve for x
    x = 12,417,922,422.04/119,330.76
  6. Step 6: Final answer
    x = 104,063.05

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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.