Home / 118,128.72-177,141.09-43,229.40

Finding the Fourth Proportional to 118,128.72, 177,141.09 and 43,229.40

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Solution

The fourth proportional to 118,128.72, 177,141.09 and 43,229.40 is: 64,825.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,128.72 : 177,141.09 = 43,229.40 : x
  2. Step 2: Convert to fraction form
    118,128.72/177,141.09 = 43,229.40/x
  3. Step 3: Cross multiply
    118,128.72x = 177,141.09 × 43,229.40
  4. Step 4: Simplify right side
    118,128.72x = 7,657,703,036.05
  5. Step 5: Solve for x
    x = 7,657,703,036.05/118,128.72
  6. Step 6: Final answer
    x = 64,825.07

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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.