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Finding the Fourth Proportional to 146,390.48, 202,019.88 and 79,322.48

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Solution

The fourth proportional to 146,390.48, 202,019.88 and 79,322.48 is: 109,465.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,390.48 : 202,019.88 = 79,322.48 : x
  2. Step 2: Convert to fraction form
    146,390.48/202,019.88 = 79,322.48/x
  3. Step 3: Cross multiply
    146,390.48x = 202,019.88 × 79,322.48
  4. Step 4: Simplify right side
    146,390.48x = 16,024,717,890.90
  5. Step 5: Solve for x
    x = 16,024,717,890.90/146,390.48
  6. Step 6: Final answer
    x = 109,465.57

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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.