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Finding the Fourth Proportional to 118,952.81, 178,372.71 and 69,048.20

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Solution

The fourth proportional to 118,952.81, 178,372.71 and 69,048.20 is: 103,539.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,952.81 : 178,372.71 = 69,048.20 : x
  2. Step 2: Convert to fraction form
    118,952.81/178,372.71 = 69,048.20/x
  3. Step 3: Cross multiply
    118,952.81x = 178,372.71 × 69,048.20
  4. Step 4: Simplify right side
    118,952.81x = 12,316,314,554.62
  5. Step 5: Solve for x
    x = 12,316,314,554.62/118,952.81
  6. Step 6: Final answer
    x = 103,539.50

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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.