Home / 102,998.61-142,126.34-57,670.29

Finding the Fourth Proportional to 102,998.61, 142,126.34 and 57,670.29

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Solution

The fourth proportional to 102,998.61, 142,126.34 and 57,670.29 is: 79,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,998.61 : 142,126.34 = 57,670.29 : x
  2. Step 2: Convert to fraction form
    102,998.61/142,126.34 = 57,670.29/x
  3. Step 3: Cross multiply
    102,998.61x = 142,126.34 × 57,670.29
  4. Step 4: Simplify right side
    102,998.61x = 8,196,466,956.09
  5. Step 5: Solve for x
    x = 8,196,466,956.09/102,998.61
  6. Step 6: Final answer
    x = 79,578.42

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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.