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Finding the Fourth Proportional to 101,350.95, 152,051.21 and 71,423.57

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Solution

The fourth proportional to 101,350.95, 152,051.21 and 71,423.57 is: 107,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,350.95 : 152,051.21 = 71,423.57 : x
  2. Step 2: Convert to fraction form
    101,350.95/152,051.21 = 71,423.57/x
  3. Step 3: Cross multiply
    101,350.95x = 152,051.21 × 71,423.57
  4. Step 4: Simplify right side
    101,350.95x = 10,860,039,123.65
  5. Step 5: Solve for x
    x = 10,860,039,123.65/101,350.95
  6. Step 6: Final answer
    x = 107,152.81

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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.