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Finding the Fourth Proportional to 101,279.70, 139,762.26 and 60,445.98

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Solution

The fourth proportional to 101,279.70, 139,762.26 and 60,445.98 is: 83,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,279.70 : 139,762.26 = 60,445.98 : x
  2. Step 2: Convert to fraction form
    101,279.70/139,762.26 = 60,445.98/x
  3. Step 3: Cross multiply
    101,279.70x = 139,762.26 × 60,445.98
  4. Step 4: Simplify right side
    101,279.70x = 8,448,066,772.71
  5. Step 5: Solve for x
    x = 8,448,066,772.71/101,279.70
  6. Step 6: Final answer
    x = 83,413.23

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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.