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Finding the Fourth Proportional to 125,700.04, 188,639.88 and 45,737.80

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Solution

The fourth proportional to 125,700.04, 188,639.88 and 45,737.80 is: 68,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,700.04 : 188,639.88 = 45,737.80 : x
  2. Step 2: Convert to fraction form
    125,700.04/188,639.88 = 45,737.80/x
  3. Step 3: Cross multiply
    125,700.04x = 188,639.88 × 45,737.80
  4. Step 4: Simplify right side
    125,700.04x = 8,627,973,103.46
  5. Step 5: Solve for x
    x = 8,627,973,103.46/125,700.04
  6. Step 6: Final answer
    x = 68,639.38

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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.