Home / 158,396.18-218,586.74-86,776.38

Finding the Fourth Proportional to 158,396.18, 218,586.74 and 86,776.38

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Solution

The fourth proportional to 158,396.18, 218,586.74 and 86,776.38 is: 119,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,396.18 : 218,586.74 = 86,776.38 : x
  2. Step 2: Convert to fraction form
    158,396.18/218,586.74 = 86,776.38/x
  3. Step 3: Cross multiply
    158,396.18x = 218,586.74 × 86,776.38
  4. Step 4: Simplify right side
    158,396.18x = 18,968,165,579.32
  5. Step 5: Solve for x
    x = 18,968,165,579.32/158,396.18
  6. Step 6: Final answer
    x = 119,751.41

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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.