Home / 124,198.08-171,593.76-86,640

Finding the Fourth Proportional to 124,198.08, 171,593.76 and 86,640

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Solution

The fourth proportional to 124,198.08, 171,593.76 and 86,640 is: 119,703.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,198.08 : 171,593.76 = 86,640 : x
  2. Step 2: Convert to fraction form
    124,198.08/171,593.76 = 86,640/x
  3. Step 3: Cross multiply
    124,198.08x = 171,593.76 × 86,640
  4. Step 4: Simplify right side
    124,198.08x = 14,866,883,366.40
  5. Step 5: Solve for x
    x = 14,866,883,366.40/124,198.08
  6. Step 6: Final answer
    x = 119,703.00

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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.