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Finding the Fourth Proportional to 111,702.38, 167,553.46 and 78,570.64

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Solution

The fourth proportional to 111,702.38, 167,553.46 and 78,570.64 is: 117,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,702.38 : 167,553.46 = 78,570.64 : x
  2. Step 2: Convert to fraction form
    111,702.38/167,553.46 = 78,570.64/x
  3. Step 3: Cross multiply
    111,702.38x = 167,553.46 × 78,570.64
  4. Step 4: Simplify right side
    111,702.38x = 13,164,782,894.07
  5. Step 5: Solve for x
    x = 13,164,782,894.07/111,702.38
  6. Step 6: Final answer
    x = 117,855.89

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1.5x scale

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.