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Finding the Fourth Proportional to 178,181.81, 245,777.61 and 116,931.96

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Solution

The fourth proportional to 178,181.81, 245,777.61 and 116,931.96 is: 161,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,181.81 : 245,777.61 = 116,931.96 : x
  2. Step 2: Convert to fraction form
    178,181.81/245,777.61 = 116,931.96/x
  3. Step 3: Cross multiply
    178,181.81x = 245,777.61 × 116,931.96
  4. Step 4: Simplify right side
    178,181.81x = 28,739,257,661.42
  5. Step 5: Solve for x
    x = 28,739,257,661.42/178,181.81
  6. Step 6: Final answer
    x = 161,291.76

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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.