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Finding the Fourth Proportional to 118,944, 178,485.12 and 53,280

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Solution

The fourth proportional to 118,944, 178,485.12 and 53,280 is: 79,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,944 : 178,485.12 = 53,280 : x
  2. Step 2: Convert to fraction form
    118,944/178,485.12 = 53,280/x
  3. Step 3: Cross multiply
    118,944x = 178,485.12 × 53,280
  4. Step 4: Simplify right side
    118,944x = 9,509,687,193.60
  5. Step 5: Solve for x
    x = 9,509,687,193.60/118,944
  6. Step 6: Final answer
    x = 79,950.96

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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.