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Finding the Fourth Proportional to 139,210.44, 191,983.80 and 117,745.26

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Solution

The fourth proportional to 139,210.44, 191,983.80 and 117,745.26 is: 162,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,210.44 : 191,983.80 = 117,745.26 : x
  2. Step 2: Convert to fraction form
    139,210.44/191,983.80 = 117,745.26/x
  3. Step 3: Cross multiply
    139,210.44x = 191,983.80 × 117,745.26
  4. Step 4: Simplify right side
    139,210.44x = 22,605,182,446.79
  5. Step 5: Solve for x
    x = 22,605,182,446.79/139,210.44
  6. Step 6: Final answer
    x = 162,381.37

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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.