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Finding the Fourth Proportional to 101,551.50, 140,108.67 and 65,768.94

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Solution

The fourth proportional to 101,551.50, 140,108.67 and 65,768.94 is: 90,740.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,551.50 : 140,108.67 = 65,768.94 : x
  2. Step 2: Convert to fraction form
    101,551.50/140,108.67 = 65,768.94/x
  3. Step 3: Cross multiply
    101,551.50x = 140,108.67 × 65,768.94
  4. Step 4: Simplify right side
    101,551.50x = 9,214,798,710.71
  5. Step 5: Solve for x
    x = 9,214,798,710.71/101,551.50
  6. Step 6: Final answer
    x = 90,740.15

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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.