Home / 158,136.54-218,226.51-86,515.62

Finding the Fourth Proportional to 158,136.54, 218,226.51 and 86,515.62

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Solution

The fourth proportional to 158,136.54, 218,226.51 and 86,515.62 is: 119,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,136.54 : 218,226.51 = 86,515.62 : x
  2. Step 2: Convert to fraction form
    158,136.54/218,226.51 = 86,515.62/x
  3. Step 3: Cross multiply
    158,136.54x = 218,226.51 × 86,515.62
  4. Step 4: Simplify right side
    158,136.54x = 18,880,001,813.09
  5. Step 5: Solve for x
    x = 18,880,001,813.09/158,136.54
  6. Step 6: Final answer
    x = 119,390.51

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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.