Home / 109,782.91-151,542.23-71,551.77

Finding the Fourth Proportional to 109,782.91, 151,542.23 and 71,551.77

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Solution

The fourth proportional to 109,782.91, 151,542.23 and 71,551.77 is: 98,768.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.91 : 151,542.23 = 71,551.77 : x
  2. Step 2: Convert to fraction form
    109,782.91/151,542.23 = 71,551.77/x
  3. Step 3: Cross multiply
    109,782.91x = 151,542.23 × 71,551.77
  4. Step 4: Simplify right side
    109,782.91x = 10,843,114,712.63
  5. Step 5: Solve for x
    x = 10,843,114,712.63/109,782.91
  6. Step 6: Final answer
    x = 98,768.69

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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.