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Finding the Fourth Proportional to 125,307.89, 187,996.53 and 57,860.51

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Solution

The fourth proportional to 125,307.89, 187,996.53 and 57,860.51 is: 86,806.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,307.89 : 187,996.53 = 57,860.51 : x
  2. Step 2: Convert to fraction form
    125,307.89/187,996.53 = 57,860.51/x
  3. Step 3: Cross multiply
    125,307.89x = 187,996.53 × 57,860.51
  4. Step 4: Simplify right side
    125,307.89x = 10,877,575,104.03
  5. Step 5: Solve for x
    x = 10,877,575,104.03/125,307.89
  6. Step 6: Final answer
    x = 86,806.79

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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.