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Finding the Fourth Proportional to 139,149.63, 192,025.71 and 75,486.06

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Solution

The fourth proportional to 139,149.63, 192,025.71 and 75,486.06 is: 104,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,149.63 : 192,025.71 = 75,486.06 : x
  2. Step 2: Convert to fraction form
    139,149.63/192,025.71 = 75,486.06/x
  3. Step 3: Cross multiply
    139,149.63x = 192,025.71 × 75,486.06
  4. Step 4: Simplify right side
    139,149.63x = 14,495,264,266.60
  5. Step 5: Solve for x
    x = 14,495,264,266.60/139,149.63
  6. Step 6: Final answer
    x = 104,170.34

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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.