Home / 120,307.72-180,357.90-58,021.96

Finding the Fourth Proportional to 120,307.72, 180,357.90 and 58,021.96

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Solution

The fourth proportional to 120,307.72, 180,357.90 and 58,021.96 is: 86,982.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,307.72 : 180,357.90 = 58,021.96 : x
  2. Step 2: Convert to fraction form
    120,307.72/180,357.90 = 58,021.96/x
  3. Step 3: Cross multiply
    120,307.72x = 180,357.90 × 58,021.96
  4. Step 4: Simplify right side
    120,307.72x = 10,464,718,859.48
  5. Step 5: Solve for x
    x = 10,464,718,859.48/120,307.72
  6. Step 6: Final answer
    x = 86,982.94

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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.