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Finding the Fourth Proportional to 185,392.12, 255,705.24 and 121,706.68

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Solution

The fourth proportional to 185,392.12, 255,705.24 and 121,706.68 is: 167,866.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,392.12 : 255,705.24 = 121,706.68 : x
  2. Step 2: Convert to fraction form
    185,392.12/255,705.24 = 121,706.68/x
  3. Step 3: Cross multiply
    185,392.12x = 255,705.24 × 121,706.68
  4. Step 4: Simplify right side
    185,392.12x = 31,121,035,819.00
  5. Step 5: Solve for x
    x = 31,121,035,819.00/185,392.12
  6. Step 6: Final answer
    x = 167,866.01

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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.