Home / 421,022.52-631,633.08-136,712.16

Finding the Fourth Proportional to 421,022.52, 631,633.08 and 136,712.16

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Solution

The fourth proportional to 421,022.52, 631,633.08 and 136,712.16 is: 205,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,022.52 : 631,633.08 = 136,712.16 : x
  2. Step 2: Convert to fraction form
    421,022.52/631,633.08 = 136,712.16/x
  3. Step 3: Cross multiply
    421,022.52x = 631,633.08 × 136,712.16
  4. Step 4: Simplify right side
    421,022.52x = 86,351,922,694.25
  5. Step 5: Solve for x
    x = 86,351,922,694.25/421,022.52
  6. Step 6: Final answer
    x = 205,100.48

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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.