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Finding the Fourth Proportional to 98,702.70, 136,209.33 and 53,380.73

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Solution

The fourth proportional to 98,702.70, 136,209.33 and 53,380.73 is: 73,665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,702.70 : 136,209.33 = 53,380.73 : x
  2. Step 2: Convert to fraction form
    98,702.70/136,209.33 = 53,380.73/x
  3. Step 3: Cross multiply
    98,702.70x = 136,209.33 × 53,380.73
  4. Step 4: Simplify right side
    98,702.70x = 7,270,953,468.21
  5. Step 5: Solve for x
    x = 7,270,953,468.21/98,702.70
  6. Step 6: Final answer
    x = 73,665.19

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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.