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Finding the Fourth Proportional to 109,590, 151,234.20 and 59,289

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Solution

The fourth proportional to 109,590, 151,234.20 and 59,289 is: 81,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,590 : 151,234.20 = 59,289 : x
  2. Step 2: Convert to fraction form
    109,590/151,234.20 = 59,289/x
  3. Step 3: Cross multiply
    109,590x = 151,234.20 × 59,289
  4. Step 4: Simplify right side
    109,590x = 8,966,524,483.80
  5. Step 5: Solve for x
    x = 8,966,524,483.80/109,590
  6. Step 6: Final answer
    x = 81,818.82

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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.