Home / 144,287.72-199,140.29-90,580.47

Finding the Fourth Proportional to 144,287.72, 199,140.29 and 90,580.47

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Solution

The fourth proportional to 144,287.72, 199,140.29 and 90,580.47 is: 125,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,287.72 : 199,140.29 = 90,580.47 : x
  2. Step 2: Convert to fraction form
    144,287.72/199,140.29 = 90,580.47/x
  3. Step 3: Cross multiply
    144,287.72x = 199,140.29 × 90,580.47
  4. Step 4: Simplify right side
    144,287.72x = 18,038,221,064.14
  5. Step 5: Solve for x
    x = 18,038,221,064.14/144,287.72
  6. Step 6: Final answer
    x = 125,015.64

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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.