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Finding the Fourth Proportional to 101,575.50, 140,127.67 and 65,777.05

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Solution

The fourth proportional to 101,575.50, 140,127.67 and 65,777.05 is: 90,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,575.50 : 140,127.67 = 65,777.05 : x
  2. Step 2: Convert to fraction form
    101,575.50/140,127.67 = 65,777.05/x
  3. Step 3: Cross multiply
    101,575.50x = 140,127.67 × 65,777.05
  4. Step 4: Simplify right side
    101,575.50x = 9,217,184,225.14
  5. Step 5: Solve for x
    x = 9,217,184,225.14/101,575.50
  6. Step 6: Final answer
    x = 90,742.20

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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.