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Finding the Fourth Proportional to 118,368.64, 177,487.44 and 39,439.84

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Solution

The fourth proportional to 118,368.64, 177,487.44 and 39,439.84 is: 59,137.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,368.64 : 177,487.44 = 39,439.84 : x
  2. Step 2: Convert to fraction form
    118,368.64/177,487.44 = 39,439.84/x
  3. Step 3: Cross multiply
    118,368.64x = 177,487.44 × 39,439.84
  4. Step 4: Simplify right side
    118,368.64x = 7,000,076,235.61
  5. Step 5: Solve for x
    x = 7,000,076,235.61/118,368.64
  6. Step 6: Final answer
    x = 59,137.93

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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.