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Finding the Fourth Proportional to 103,108.88, 142,287.88 and 60,085.64

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Solution

The fourth proportional to 103,108.88, 142,287.88 and 60,085.64 is: 82,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,108.88 : 142,287.88 = 60,085.64 : x
  2. Step 2: Convert to fraction form
    103,108.88/142,287.88 = 60,085.64/x
  3. Step 3: Cross multiply
    103,108.88x = 142,287.88 × 60,085.64
  4. Step 4: Simplify right side
    103,108.88x = 8,549,458,334.04
  5. Step 5: Solve for x
    x = 8,549,458,334.04/103,108.88
  6. Step 6: Final answer
    x = 82,916.80

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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.