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Finding the Fourth Proportional to 118,925.82, 178,038.81 and 79,384.86

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Solution

The fourth proportional to 118,925.82, 178,038.81 and 79,384.86 is: 118,843.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,925.82 : 178,038.81 = 79,384.86 : x
  2. Step 2: Convert to fraction form
    118,925.82/178,038.81 = 79,384.86/x
  3. Step 3: Cross multiply
    118,925.82x = 178,038.81 × 79,384.86
  4. Step 4: Simplify right side
    118,925.82x = 14,133,586,649.98
  5. Step 5: Solve for x
    x = 14,133,586,649.98/118,925.82
  6. Step 6: Final answer
    x = 118,843.72

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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.