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Finding the Fourth Proportional to 101,290.62, 139,777.29 and 55,967.64

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Solution

The fourth proportional to 101,290.62, 139,777.29 and 55,967.64 is: 77,233.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,290.62 : 139,777.29 = 55,967.64 : x
  2. Step 2: Convert to fraction form
    101,290.62/139,777.29 = 55,967.64/x
  3. Step 3: Cross multiply
    101,290.62x = 139,777.29 × 55,967.64
  4. Step 4: Simplify right side
    101,290.62x = 7,823,005,046.90
  5. Step 5: Solve for x
    x = 7,823,005,046.90/101,290.62
  6. Step 6: Final answer
    x = 77,233.26

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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.