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Finding the Fourth Proportional to 101,130.44, 139,499.87 and 65,341.55

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Solution

The fourth proportional to 101,130.44, 139,499.87 and 65,341.55 is: 90,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,130.44 : 139,499.87 = 65,341.55 : x
  2. Step 2: Convert to fraction form
    101,130.44/139,499.87 = 65,341.55/x
  3. Step 3: Cross multiply
    101,130.44x = 139,499.87 × 65,341.55
  4. Step 4: Simplify right side
    101,130.44x = 9,115,136,706.39
  5. Step 5: Solve for x
    x = 9,115,136,706.39/101,130.44
  6. Step 6: Final answer
    x = 90,132.48

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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.