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Finding the Fourth Proportional to 178,876.16, 246,764.04 and 128,604.32

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Solution

The fourth proportional to 178,876.16, 246,764.04 and 128,604.32 is: 177,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,876.16 : 246,764.04 = 128,604.32 : x
  2. Step 2: Convert to fraction form
    178,876.16/246,764.04 = 128,604.32/x
  3. Step 3: Cross multiply
    178,876.16x = 246,764.04 × 128,604.32
  4. Step 4: Simplify right side
    178,876.16x = 31,734,921,564.65
  5. Step 5: Solve for x
    x = 31,734,921,564.65/178,876.16
  6. Step 6: Final answer
    x = 177,412.81

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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.