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Finding the Fourth Proportional to 159,525.75, 220,144.59 and 86,928.51

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Solution

The fourth proportional to 159,525.75, 220,144.59 and 86,928.51 is: 119,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,525.75 : 220,144.59 = 86,928.51 : x
  2. Step 2: Convert to fraction form
    159,525.75/220,144.59 = 86,928.51/x
  3. Step 3: Cross multiply
    159,525.75x = 220,144.59 × 86,928.51
  4. Step 4: Simplify right side
    159,525.75x = 19,136,841,193.26
  5. Step 5: Solve for x
    x = 19,136,841,193.26/159,525.75
  6. Step 6: Final answer
    x = 119,960.83

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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.