Home / 158,125.61-218,215.05-86,504.09

Finding the Fourth Proportional to 158,125.61, 218,215.05 and 86,504.09

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Solution

The fourth proportional to 158,125.61, 218,215.05 and 86,504.09 is: 119,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,125.61 : 218,215.05 = 86,504.09 : x
  2. Step 2: Convert to fraction form
    158,125.61/218,215.05 = 86,504.09/x
  3. Step 3: Cross multiply
    158,125.61x = 218,215.05 × 86,504.09
  4. Step 4: Simplify right side
    158,125.61x = 18,876,493,233.48
  5. Step 5: Solve for x
    x = 18,876,493,233.48/158,125.61
  6. Step 6: Final answer
    x = 119,376.58

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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.