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Finding the Fourth Proportional to 158,414.37, 218,612.32 and 85,818.02

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Solution

The fourth proportional to 158,414.37, 218,612.32 and 85,818.02 is: 118,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,414.37 : 218,612.32 = 85,818.02 : x
  2. Step 2: Convert to fraction form
    158,414.37/218,612.32 = 85,818.02/x
  3. Step 3: Cross multiply
    158,414.37x = 218,612.32 × 85,818.02
  4. Step 4: Simplify right side
    158,414.37x = 18,760,875,142.40
  5. Step 5: Solve for x
    x = 18,760,875,142.40/158,414.37
  6. Step 6: Final answer
    x = 118,429.13

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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.