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Finding the Fourth Proportional to 178,990.37, 268,479.47 and 45,871.93

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Solution

The fourth proportional to 178,990.37, 268,479.47 and 45,871.93 is: 68,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,990.37 : 268,479.47 = 45,871.93 : x
  2. Step 2: Convert to fraction form
    178,990.37/268,479.47 = 45,871.93/x
  3. Step 3: Cross multiply
    178,990.37x = 268,479.47 × 45,871.93
  4. Step 4: Simplify right side
    178,990.37x = 12,315,671,904.56
  5. Step 5: Solve for x
    x = 12,315,671,904.56/178,990.37
  6. Step 6: Final answer
    x = 68,806.34

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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.