Home / 102,920.44-142,036.74-57,603.64

Finding the Fourth Proportional to 102,920.44, 142,036.74 and 57,603.64

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Solution

The fourth proportional to 102,920.44, 142,036.74 and 57,603.64 is: 79,496.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,920.44 : 142,036.74 = 57,603.64 : x
  2. Step 2: Convert to fraction form
    102,920.44/142,036.74 = 57,603.64/x
  3. Step 3: Cross multiply
    102,920.44x = 142,036.74 × 57,603.64
  4. Step 4: Simplify right side
    102,920.44x = 8,181,833,237.73
  5. Step 5: Solve for x
    x = 8,181,833,237.73/102,920.44
  6. Step 6: Final answer
    x = 79,496.68

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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.