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Finding the Fourth Proportional to 152,125.99, 228,119.72 and 81,030.57

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Solution

The fourth proportional to 152,125.99, 228,119.72 and 81,030.57 is: 121,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,125.99 : 228,119.72 = 81,030.57 : x
  2. Step 2: Convert to fraction form
    152,125.99/228,119.72 = 81,030.57/x
  3. Step 3: Cross multiply
    152,125.99x = 228,119.72 × 81,030.57
  4. Step 4: Simplify right side
    152,125.99x = 18,484,670,939.84
  5. Step 5: Solve for x
    x = 18,484,670,939.84/152,125.99
  6. Step 6: Final answer
    x = 121,508.96

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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.