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Finding the Fourth Proportional to 163,939.60, 245,866.20 and 51,619.60

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Solution

The fourth proportional to 163,939.60, 245,866.20 and 51,619.60 is: 77,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,939.60 : 245,866.20 = 51,619.60 : x
  2. Step 2: Convert to fraction form
    163,939.60/245,866.20 = 51,619.60/x
  3. Step 3: Cross multiply
    163,939.60x = 245,866.20 × 51,619.60
  4. Step 4: Simplify right side
    163,939.60x = 12,691,514,897.52
  5. Step 5: Solve for x
    x = 12,691,514,897.52/163,939.60
  6. Step 6: Final answer
    x = 77,415.80

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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.