Home / 120,298.19-180,394.59-57,136.37

Finding the Fourth Proportional to 120,298.19, 180,394.59 and 57,136.37

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Solution

The fourth proportional to 120,298.19, 180,394.59 and 57,136.37 is: 85,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,298.19 : 180,394.59 = 57,136.37 : x
  2. Step 2: Convert to fraction form
    120,298.19/180,394.59 = 57,136.37/x
  3. Step 3: Cross multiply
    120,298.19x = 180,394.59 × 57,136.37
  4. Step 4: Simplify right side
    120,298.19x = 10,307,092,040.24
  5. Step 5: Solve for x
    x = 10,307,092,040.24/120,298.19
  6. Step 6: Final answer
    x = 85,679.53

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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.