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Finding the Fourth Proportional to 112,796.36, 155,658.95 and 65,049.70

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Solution

The fourth proportional to 112,796.36, 155,658.95 and 65,049.70 is: 89,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,796.36 : 155,658.95 = 65,049.70 : x
  2. Step 2: Convert to fraction form
    112,796.36/155,658.95 = 65,049.70/x
  3. Step 3: Cross multiply
    112,796.36x = 155,658.95 × 65,049.70
  4. Step 4: Simplify right side
    112,796.36x = 10,125,567,999.82
  5. Step 5: Solve for x
    x = 10,125,567,999.82/112,796.36
  6. Step 6: Final answer
    x = 89,768.57

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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.