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Finding the Fourth Proportional to 158,075.44, 218,143.60 and 85,477.80

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Solution

The fourth proportional to 158,075.44, 218,143.60 and 85,477.80 is: 117,959.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,075.44 : 218,143.60 = 85,477.80 : x
  2. Step 2: Convert to fraction form
    158,075.44/218,143.60 = 85,477.80/x
  3. Step 3: Cross multiply
    158,075.44x = 218,143.60 × 85,477.80
  4. Step 4: Simplify right side
    158,075.44x = 18,646,435,012.08
  5. Step 5: Solve for x
    x = 18,646,435,012.08/158,075.44
  6. Step 6: Final answer
    x = 117,959.09

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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.