Home / 118,880.64-164,057.13-71,136

Finding the Fourth Proportional to 118,880.64, 164,057.13 and 71,136

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Solution

The fourth proportional to 118,880.64, 164,057.13 and 71,136 is: 98,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,880.64 : 164,057.13 = 71,136 : x
  2. Step 2: Convert to fraction form
    118,880.64/164,057.13 = 71,136/x
  3. Step 3: Cross multiply
    118,880.64x = 164,057.13 × 71,136
  4. Step 4: Simplify right side
    118,880.64x = 11,670,367,999.68
  5. Step 5: Solve for x
    x = 11,670,367,999.68/118,880.64
  6. Step 6: Final answer
    x = 98,168.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.