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Finding the Fourth Proportional to 145,052, 217,601.04 and 66,165.60

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Solution

The fourth proportional to 145,052, 217,601.04 and 66,165.60 is: 99,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,052 : 217,601.04 = 66,165.60 : x
  2. Step 2: Convert to fraction form
    145,052/217,601.04 = 66,165.60/x
  3. Step 3: Cross multiply
    145,052x = 217,601.04 × 66,165.60
  4. Step 4: Simplify right side
    145,052x = 14,397,703,372.22
  5. Step 5: Solve for x
    x = 14,397,703,372.22/145,052
  6. Step 6: Final answer
    x = 99,258.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.