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Finding the Fourth Proportional to 101,603.63, 140,207.94 and 55,663.44

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Solution

The fourth proportional to 101,603.63, 140,207.94 and 55,663.44 is: 76,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603.63 : 140,207.94 = 55,663.44 : x
  2. Step 2: Convert to fraction form
    101,603.63/140,207.94 = 55,663.44/x
  3. Step 3: Cross multiply
    101,603.63x = 140,207.94 × 55,663.44
  4. Step 4: Simplify right side
    101,603.63x = 7,804,456,255.71
  5. Step 5: Solve for x
    x = 7,804,456,255.71/101,603.63
  6. Step 6: Final answer
    x = 76,812.77

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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.