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Finding the Fourth Proportional to 158,336.68, 218,504.90 and 85,740.36

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Solution

The fourth proportional to 158,336.68, 218,504.90 and 85,740.36 is: 118,321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,336.68 : 218,504.90 = 85,740.36 : x
  2. Step 2: Convert to fraction form
    158,336.68/218,504.90 = 85,740.36/x
  3. Step 3: Cross multiply
    158,336.68x = 218,504.90 × 85,740.36
  4. Step 4: Simplify right side
    158,336.68x = 18,734,688,787.76
  5. Step 5: Solve for x
    x = 18,734,688,787.76/158,336.68
  6. Step 6: Final answer
    x = 118,321.85

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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.