Home / 131,607.54-181,534.77-86,288.49

Finding the Fourth Proportional to 131,607.54, 181,534.77 and 86,288.49

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Solution

The fourth proportional to 131,607.54, 181,534.77 and 86,288.49 is: 119,023.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,607.54 : 181,534.77 = 86,288.49 : x
  2. Step 2: Convert to fraction form
    131,607.54/181,534.77 = 86,288.49/x
  3. Step 3: Cross multiply
    131,607.54x = 181,534.77 × 86,288.49
  4. Step 4: Simplify right side
    131,607.54x = 15,664,361,185.80
  5. Step 5: Solve for x
    x = 15,664,361,185.80/131,607.54
  6. Step 6: Final answer
    x = 119,023.28

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1.5x scale

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.