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Finding the Fourth Proportional to 152,124.99, 228,118.22 and 81,029.57

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Solution

The fourth proportional to 152,124.99, 228,118.22 and 81,029.57 is: 121,507.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,124.99 : 228,118.22 = 81,029.57 : x
  2. Step 2: Convert to fraction form
    152,124.99/228,118.22 = 81,029.57/x
  3. Step 3: Cross multiply
    152,124.99x = 228,118.22 × 81,029.57
  4. Step 4: Simplify right side
    152,124.99x = 18,484,320,489.68
  5. Step 5: Solve for x
    x = 18,484,320,489.68/152,124.99
  6. Step 6: Final answer
    x = 121,507.46

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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.