Home / 80,177.61-120,307.91-58,172.61

Finding the Fourth Proportional to 80,177.61, 120,307.91 and 58,172.61

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Solution

The fourth proportional to 80,177.61, 120,307.91 and 58,172.61 is: 87,289.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,177.61 : 120,307.91 = 58,172.61 : x
  2. Step 2: Convert to fraction form
    80,177.61/120,307.91 = 58,172.61/x
  3. Step 3: Cross multiply
    80,177.61x = 120,307.91 × 58,172.61
  4. Step 4: Simplify right side
    80,177.61x = 6,998,624,837.48
  5. Step 5: Solve for x
    x = 6,998,624,837.48/80,177.61
  6. Step 6: Final answer
    x = 87,289.02

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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.