Home / 102,959.53-142,083.07-57,637.89

Finding the Fourth Proportional to 102,959.53, 142,083.07 and 57,637.89

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Solution

The fourth proportional to 102,959.53, 142,083.07 and 57,637.89 is: 79,539.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,959.53 : 142,083.07 = 57,637.89 : x
  2. Step 2: Convert to fraction form
    102,959.53/142,083.07 = 57,637.89/x
  3. Step 3: Cross multiply
    102,959.53x = 142,083.07 × 57,637.89
  4. Step 4: Simplify right side
    102,959.53x = 8,189,368,231.77
  5. Step 5: Solve for x
    x = 8,189,368,231.77/102,959.53
  6. Step 6: Final answer
    x = 79,539.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.