Home / 86,139.66-129,154.13-41,136.67

Finding the Fourth Proportional to 86,139.66, 129,154.13 and 41,136.67

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Solution

The fourth proportional to 86,139.66, 129,154.13 and 41,136.67 is: 61,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,139.66 : 129,154.13 = 41,136.67 : x
  2. Step 2: Convert to fraction form
    86,139.66/129,154.13 = 41,136.67/x
  3. Step 3: Cross multiply
    86,139.66x = 129,154.13 × 41,136.67
  4. Step 4: Simplify right side
    86,139.66x = 5,312,970,571.72
  5. Step 5: Solve for x
    x = 5,312,970,571.72/86,139.66
  6. Step 6: Final answer
    x = 61,678.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.