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Finding the Fourth Proportional to 139,148.46, 192,024.81 and 75,486.24

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Solution

The fourth proportional to 139,148.46, 192,024.81 and 75,486.24 is: 104,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,148.46 : 192,024.81 = 75,486.24 : x
  2. Step 2: Convert to fraction form
    139,148.46/192,024.81 = 75,486.24/x
  3. Step 3: Cross multiply
    139,148.46x = 192,024.81 × 75,486.24
  4. Step 4: Simplify right side
    139,148.46x = 14,495,230,893.61
  5. Step 5: Solve for x
    x = 14,495,230,893.61/139,148.46
  6. Step 6: Final answer
    x = 104,170.98

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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.