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Finding the Fourth Proportional to 125,567.80, 188,292.30 and 72,993.40

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Solution

The fourth proportional to 125,567.80, 188,292.30 and 72,993.40 is: 109,455.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,567.80 : 188,292.30 = 72,993.40 : x
  2. Step 2: Convert to fraction form
    125,567.80/188,292.30 = 72,993.40/x
  3. Step 3: Cross multiply
    125,567.80x = 188,292.30 × 72,993.40
  4. Step 4: Simplify right side
    125,567.80x = 13,744,095,170.82
  5. Step 5: Solve for x
    x = 13,744,095,170.82/125,567.80
  6. Step 6: Final answer
    x = 109,455.57

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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.