Home / 290,792.12-436,187.52-91,127.72

Finding the Fourth Proportional to 290,792.12, 436,187.52 and 91,127.72

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Solution

The fourth proportional to 290,792.12, 436,187.52 and 91,127.72 is: 136,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,792.12 : 436,187.52 = 91,127.72 : x
  2. Step 2: Convert to fraction form
    290,792.12/436,187.52 = 91,127.72/x
  3. Step 3: Cross multiply
    290,792.12x = 436,187.52 × 91,127.72
  4. Step 4: Simplify right side
    290,792.12x = 39,748,774,190.05
  5. Step 5: Solve for x
    x = 39,748,774,190.05/290,792.12
  6. Step 6: Final answer
    x = 136,691.37

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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.