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Finding the Fourth Proportional to 145,859.94, 219,185.19 and 79,349.22

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Solution

The fourth proportional to 145,859.94, 219,185.19 and 79,349.22 is: 119,238.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,859.94 : 219,185.19 = 79,349.22 : x
  2. Step 2: Convert to fraction form
    145,859.94/219,185.19 = 79,349.22/x
  3. Step 3: Cross multiply
    145,859.94x = 219,185.19 × 79,349.22
  4. Step 4: Simplify right side
    145,859.94x = 17,392,173,862.05
  5. Step 5: Solve for x
    x = 17,392,173,862.05/145,859.94
  6. Step 6: Final answer
    x = 119,238.87

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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.