Home / 139,148.64-192,124.98-85,505.58

Finding the Fourth Proportional to 139,148.64, 192,124.98 and 85,505.58

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Solution

The fourth proportional to 139,148.64, 192,124.98 and 85,505.58 is: 118,059.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,148.64 : 192,124.98 = 85,505.58 : x
  2. Step 2: Convert to fraction form
    139,148.64/192,124.98 = 85,505.58/x
  3. Step 3: Cross multiply
    139,148.64x = 192,124.98 × 85,505.58
  4. Step 4: Simplify right side
    139,148.64x = 16,427,757,847.39
  5. Step 5: Solve for x
    x = 16,427,757,847.39/139,148.64
  6. Step 6: Final answer
    x = 118,059.06

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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.