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Finding the Fourth Proportional to 101,908.95, 152,922.96 and 42,739.67

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Solution

The fourth proportional to 101,908.95, 152,922.96 and 42,739.67 is: 64,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,908.95 : 152,922.96 = 42,739.67 : x
  2. Step 2: Convert to fraction form
    101,908.95/152,922.96 = 42,739.67/x
  3. Step 3: Cross multiply
    101,908.95x = 152,922.96 × 42,739.67
  4. Step 4: Simplify right side
    101,908.95x = 6,535,876,081.21
  5. Step 5: Solve for x
    x = 6,535,876,081.21/101,908.95
  6. Step 6: Final answer
    x = 64,134.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.