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Finding the Fourth Proportional to 158,612.10, 218,896.20 and 104,803.80

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Solution

The fourth proportional to 158,612.10, 218,896.20 and 104,803.80 is: 144,636.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,612.10 : 218,896.20 = 104,803.80 : x
  2. Step 2: Convert to fraction form
    158,612.10/218,896.20 = 104,803.80/x
  3. Step 3: Cross multiply
    158,612.10x = 218,896.20 × 104,803.80
  4. Step 4: Simplify right side
    158,612.10x = 22,941,153,565.56
  5. Step 5: Solve for x
    x = 22,941,153,565.56/158,612.10
  6. Step 6: Final answer
    x = 144,636.84

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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.