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Finding the Fourth Proportional to 139,630.03, 192,689.90 and 75,967.81

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Solution

The fourth proportional to 139,630.03, 192,689.90 and 75,967.81 is: 104,835.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,630.03 : 192,689.90 = 75,967.81 : x
  2. Step 2: Convert to fraction form
    139,630.03/192,689.90 = 75,967.81/x
  3. Step 3: Cross multiply
    139,630.03x = 192,689.90 × 75,967.81
  4. Step 4: Simplify right side
    139,630.03x = 14,638,229,712.12
  5. Step 5: Solve for x
    x = 14,638,229,712.12/139,630.03
  6. Step 6: Final answer
    x = 104,835.83

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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.