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Finding the Fourth Proportional to 158,337.81, 218,506.32 and 85,740.48

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Solution

The fourth proportional to 158,337.81, 218,506.32 and 85,740.48 is: 118,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,337.81 : 218,506.32 = 85,740.48 : x
  2. Step 2: Convert to fraction form
    158,337.81/218,506.32 = 85,740.48/x
  3. Step 3: Cross multiply
    158,337.81x = 218,506.32 × 85,740.48
  4. Step 4: Simplify right side
    158,337.81x = 18,734,836,759.83
  5. Step 5: Solve for x
    x = 18,734,836,759.83/158,337.81
  6. Step 6: Final answer
    x = 118,321.94

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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.