Home / 205,342.72-307,264.73-121,143.22

Finding the Fourth Proportional to 205,342.72, 307,264.73 and 121,143.22

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Solution

The fourth proportional to 205,342.72, 307,264.73 and 121,143.22 is: 181,272.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,342.72 : 307,264.73 = 121,143.22 : x
  2. Step 2: Convert to fraction form
    205,342.72/307,264.73 = 121,143.22/x
  3. Step 3: Cross multiply
    205,342.72x = 307,264.73 × 121,143.22
  4. Step 4: Simplify right side
    205,342.72x = 37,223,038,563.00
  5. Step 5: Solve for x
    x = 37,223,038,563.00/205,342.72
  6. Step 6: Final answer
    x = 181,272.74

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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.