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Finding the Fourth Proportional to 125,728.54, 173,500.86 and 69,139.51

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Solution

The fourth proportional to 125,728.54, 173,500.86 and 69,139.51 is: 95,410.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,728.54 : 173,500.86 = 69,139.51 : x
  2. Step 2: Convert to fraction form
    125,728.54/173,500.86 = 69,139.51/x
  3. Step 3: Cross multiply
    125,728.54x = 173,500.86 × 69,139.51
  4. Step 4: Simplify right side
    125,728.54x = 11,995,764,444.98
  5. Step 5: Solve for x
    x = 11,995,764,444.98/125,728.54
  6. Step 6: Final answer
    x = 95,410.04

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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.