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Finding the Fourth Proportional to 101,173.76, 139,592.64 and 65,350.72

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Solution

The fourth proportional to 101,173.76, 139,592.64 and 65,350.72 is: 90,166.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,173.76 : 139,592.64 = 65,350.72 : x
  2. Step 2: Convert to fraction form
    101,173.76/139,592.64 = 65,350.72/x
  3. Step 3: Cross multiply
    101,173.76x = 139,592.64 × 65,350.72
  4. Step 4: Simplify right side
    101,173.76x = 9,122,479,530.70
  5. Step 5: Solve for x
    x = 9,122,479,530.70/101,173.76
  6. Step 6: Final answer
    x = 90,166.46

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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.