Home / 190,129.60-285,275.94-90,360.28

Finding the Fourth Proportional to 190,129.60, 285,275.94 and 90,360.28

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Solution

The fourth proportional to 190,129.60, 285,275.94 and 90,360.28 is: 135,579.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,129.60 : 285,275.94 = 90,360.28 : x
  2. Step 2: Convert to fraction form
    190,129.60/285,275.94 = 90,360.28/x
  3. Step 3: Cross multiply
    190,129.60x = 285,275.94 × 90,360.28
  4. Step 4: Simplify right side
    190,129.60x = 25,777,613,815.66
  5. Step 5: Solve for x
    x = 25,777,613,815.66/190,129.60
  6. Step 6: Final answer
    x = 135,579.17

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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.