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Finding the Fourth Proportional to 118,950.81, 178,369.71 and 69,046.20

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Solution

The fourth proportional to 118,950.81, 178,369.71 and 69,046.20 is: 103,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,950.81 : 178,369.71 = 69,046.20 : x
  2. Step 2: Convert to fraction form
    118,950.81/178,369.71 = 69,046.20/x
  3. Step 3: Cross multiply
    118,950.81x = 178,369.71 × 69,046.20
  4. Step 4: Simplify right side
    118,950.81x = 12,315,750,670.60
  5. Step 5: Solve for x
    x = 12,315,750,670.60/118,950.81
  6. Step 6: Final answer
    x = 103,536.50

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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.