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Finding the Fourth Proportional to 122,798.88, 169,371.74 and 84,570.58

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Solution

The fourth proportional to 122,798.88, 169,371.74 and 84,570.58 is: 116,644.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,798.88 : 169,371.74 = 84,570.58 : x
  2. Step 2: Convert to fraction form
    122,798.88/169,371.74 = 84,570.58/x
  3. Step 3: Cross multiply
    122,798.88x = 169,371.74 × 84,570.58
  4. Step 4: Simplify right side
    122,798.88x = 14,323,866,287.41
  5. Step 5: Solve for x
    x = 14,323,866,287.41/122,798.88
  6. Step 6: Final answer
    x = 116,644.93

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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.