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Finding the Fourth Proportional to 139,630.47, 192,692.02 and 75,968.32

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Solution

The fourth proportional to 139,630.47, 192,692.02 and 75,968.32 is: 104,837.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,630.47 : 192,692.02 = 75,968.32 : x
  2. Step 2: Convert to fraction form
    139,630.47/192,692.02 = 75,968.32/x
  3. Step 3: Cross multiply
    139,630.47x = 192,692.02 × 75,968.32
  4. Step 4: Simplify right side
    139,630.47x = 14,638,488,073.35
  5. Step 5: Solve for x
    x = 14,638,488,073.35/139,630.47
  6. Step 6: Final answer
    x = 104,837.35

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1.5x scale

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.