Home / 80,178.24-120,136.02-42,698.52

Finding the Fourth Proportional to 80,178.24, 120,136.02 and 42,698.52

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Solution

The fourth proportional to 80,178.24, 120,136.02 and 42,698.52 is: 63,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,178.24 : 120,136.02 = 42,698.52 : x
  2. Step 2: Convert to fraction form
    80,178.24/120,136.02 = 42,698.52/x
  3. Step 3: Cross multiply
    80,178.24x = 120,136.02 × 42,698.52
  4. Step 4: Simplify right side
    80,178.24x = 5,129,630,252.69
  5. Step 5: Solve for x
    x = 5,129,630,252.69/80,178.24
  6. Step 6: Final answer
    x = 63,977.84

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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.