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Finding the Fourth Proportional to 139,862.48, 209,814.36 and 51,095.24

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Solution

The fourth proportional to 139,862.48, 209,814.36 and 51,095.24 is: 76,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,862.48 : 209,814.36 = 51,095.24 : x
  2. Step 2: Convert to fraction form
    139,862.48/209,814.36 = 51,095.24/x
  3. Step 3: Cross multiply
    139,862.48x = 209,814.36 × 51,095.24
  4. Step 4: Simplify right side
    139,862.48x = 10,720,515,079.65
  5. Step 5: Solve for x
    x = 10,720,515,079.65/139,862.48
  6. Step 6: Final answer
    x = 76,650.40

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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.