Home / 103,171.76-142,402.35-62,907.72

Finding the Fourth Proportional to 103,171.76, 142,402.35 and 62,907.72

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Solution

The fourth proportional to 103,171.76, 142,402.35 and 62,907.72 is: 86,828.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,171.76 : 142,402.35 = 62,907.72 : x
  2. Step 2: Convert to fraction form
    103,171.76/142,402.35 = 62,907.72/x
  3. Step 3: Cross multiply
    103,171.76x = 142,402.35 × 62,907.72
  4. Step 4: Simplify right side
    103,171.76x = 8,958,207,161.14
  5. Step 5: Solve for x
    x = 8,958,207,161.14/103,171.76
  6. Step 6: Final answer
    x = 86,828.09

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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.