Home / 105,320.30-145,342.05-57,573.64

Finding the Fourth Proportional to 105,320.30, 145,342.05 and 57,573.64

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Solution

The fourth proportional to 105,320.30, 145,342.05 and 57,573.64 is: 79,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,320.30 : 145,342.05 = 57,573.64 : x
  2. Step 2: Convert to fraction form
    105,320.30/145,342.05 = 57,573.64/x
  3. Step 3: Cross multiply
    105,320.30x = 145,342.05 × 57,573.64
  4. Step 4: Simplify right side
    105,320.30x = 8,367,870,136.85
  5. Step 5: Solve for x
    x = 8,367,870,136.85/105,320.30
  6. Step 6: Final answer
    x = 79,451.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.