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Finding the Fourth Proportional to 101,063.50, 139,480.52 and 84,038.45

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Solution

The fourth proportional to 101,063.50, 139,480.52 and 84,038.45 is: 115,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,063.50 : 139,480.52 = 84,038.45 : x
  2. Step 2: Convert to fraction form
    101,063.50/139,480.52 = 84,038.45/x
  3. Step 3: Cross multiply
    101,063.50x = 139,480.52 × 84,038.45
  4. Step 4: Simplify right side
    101,063.50x = 11,721,725,588.40
  5. Step 5: Solve for x
    x = 11,721,725,588.40/101,063.50
  6. Step 6: Final answer
    x = 115,983.77

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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.