Home / 125,128.89-187,693.35-31,634.64

Finding the Fourth Proportional to 125,128.89, 187,693.35 and 31,634.64

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Solution

The fourth proportional to 125,128.89, 187,693.35 and 31,634.64 is: 47,451.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,128.89 : 187,693.35 = 31,634.64 : x
  2. Step 2: Convert to fraction form
    125,128.89/187,693.35 = 31,634.64/x
  3. Step 3: Cross multiply
    125,128.89x = 187,693.35 × 31,634.64
  4. Step 4: Simplify right side
    125,128.89x = 5,937,611,557.64
  5. Step 5: Solve for x
    x = 5,937,611,557.64/125,128.89
  6. Step 6: Final answer
    x = 47,451.96

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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.