Home / 142,329.39-213,531.09-42,489.60

Finding the Fourth Proportional to 142,329.39, 213,531.09 and 42,489.60

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Solution

The fourth proportional to 142,329.39, 213,531.09 and 42,489.60 is: 63,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,329.39 : 213,531.09 = 42,489.60 : x
  2. Step 2: Convert to fraction form
    142,329.39/213,531.09 = 42,489.60/x
  3. Step 3: Cross multiply
    142,329.39x = 213,531.09 × 42,489.60
  4. Step 4: Simplify right side
    142,329.39x = 9,072,850,601.66
  5. Step 5: Solve for x
    x = 9,072,850,601.66/142,329.39
  6. Step 6: Final answer
    x = 63,745.45

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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.