Home / 89,282.31-133,948.37-72,798

Finding the Fourth Proportional to 89,282.31, 133,948.37 and 72,798

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Solution

The fourth proportional to 89,282.31, 133,948.37 and 72,798 is: 109,217.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,282.31 : 133,948.37 = 72,798 : x
  2. Step 2: Convert to fraction form
    89,282.31/133,948.37 = 72,798/x
  3. Step 3: Cross multiply
    89,282.31x = 133,948.37 × 72,798
  4. Step 4: Simplify right side
    89,282.31x = 9,751,173,439.26
  5. Step 5: Solve for x
    x = 9,751,173,439.26/89,282.31
  6. Step 6: Final answer
    x = 109,217.31

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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.