Home / 149,039.87-223,559.80-86,666.63

Finding the Fourth Proportional to 149,039.87, 223,559.80 and 86,666.63

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Solution

The fourth proportional to 149,039.87, 223,559.80 and 86,666.63 is: 129,999.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,039.87 : 223,559.80 = 86,666.63 : x
  2. Step 2: Convert to fraction form
    149,039.87/223,559.80 = 86,666.63/x
  3. Step 3: Cross multiply
    149,039.87x = 223,559.80 × 86,666.63
  4. Step 4: Simplify right side
    149,039.87x = 19,375,173,135.01
  5. Step 5: Solve for x
    x = 19,375,173,135.01/149,039.87
  6. Step 6: Final answer
    x = 129,999.94

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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.