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Finding the Fourth Proportional to 101,751.90, 140,270.13 and 71,444.94

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Solution

The fourth proportional to 101,751.90, 140,270.13 and 71,444.94 is: 98,490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,751.90 : 140,270.13 = 71,444.94 : x
  2. Step 2: Convert to fraction form
    101,751.90/140,270.13 = 71,444.94/x
  3. Step 3: Cross multiply
    101,751.90x = 140,270.13 × 71,444.94
  4. Step 4: Simplify right side
    101,751.90x = 10,021,591,021.64
  5. Step 5: Solve for x
    x = 10,021,591,021.64/101,751.90
  6. Step 6: Final answer
    x = 98,490.46

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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.