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Finding the Fourth Proportional to 125,137.92, 187,706.88 and 31,643.64

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Solution

The fourth proportional to 125,137.92, 187,706.88 and 31,643.64 is: 47,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,137.92 : 187,706.88 = 31,643.64 : x
  2. Step 2: Convert to fraction form
    125,137.92/187,706.88 = 31,643.64/x
  3. Step 3: Cross multiply
    125,137.92x = 187,706.88 × 31,643.64
  4. Step 4: Simplify right side
    125,137.92x = 5,939,728,936.24
  5. Step 5: Solve for x
    x = 5,939,728,936.24/125,137.92
  6. Step 6: Final answer
    x = 47,465.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.