Home / 118,915.12-178,373.04-30,168.64

Finding the Fourth Proportional to 118,915.12, 178,373.04 and 30,168.64

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Solution

The fourth proportional to 118,915.12, 178,373.04 and 30,168.64 is: 45,253.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,915.12 : 178,373.04 = 30,168.64 : x
  2. Step 2: Convert to fraction form
    118,915.12/178,373.04 = 30,168.64/x
  3. Step 3: Cross multiply
    118,915.12x = 178,373.04 × 30,168.64
  4. Step 4: Simplify right side
    118,915.12x = 5,381,272,029.47
  5. Step 5: Solve for x
    x = 5,381,272,029.47/118,915.12
  6. Step 6: Final answer
    x = 45,253.05

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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.