Home / 142,797.12-213,961.98-86,466.60

Finding the Fourth Proportional to 142,797.12, 213,961.98 and 86,466.60

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Solution

The fourth proportional to 142,797.12, 213,961.98 and 86,466.60 is: 129,558.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,797.12 : 213,961.98 = 86,466.60 : x
  2. Step 2: Convert to fraction form
    142,797.12/213,961.98 = 86,466.60/x
  3. Step 3: Cross multiply
    142,797.12x = 213,961.98 × 86,466.60
  4. Step 4: Simplify right side
    142,797.12x = 18,500,564,939.87
  5. Step 5: Solve for x
    x = 18,500,564,939.87/142,797.12
  6. Step 6: Final answer
    x = 129,558.39

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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.