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Finding the Fourth Proportional to 101,048.70, 139,460.22 and 84,023.66

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Solution

The fourth proportional to 101,048.70, 139,460.22 and 84,023.66 is: 115,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,048.70 : 139,460.22 = 84,023.66 : x
  2. Step 2: Convert to fraction form
    101,048.70/139,460.22 = 84,023.66/x
  3. Step 3: Cross multiply
    101,048.70x = 139,460.22 × 84,023.66
  4. Step 4: Simplify right side
    101,048.70x = 11,717,958,108.81
  5. Step 5: Solve for x
    x = 11,717,958,108.81/101,048.70
  6. Step 6: Final answer
    x = 115,963.47

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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.