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Finding the Fourth Proportional to 136,005.70, 204,075.60 and 61,178.80

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Solution

The fourth proportional to 136,005.70, 204,075.60 and 61,178.80 is: 91,798.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,005.70 : 204,075.60 = 61,178.80 : x
  2. Step 2: Convert to fraction form
    136,005.70/204,075.60 = 61,178.80/x
  3. Step 3: Cross multiply
    136,005.70x = 204,075.60 × 61,178.80
  4. Step 4: Simplify right side
    136,005.70x = 12,485,100,317.28
  5. Step 5: Solve for x
    x = 12,485,100,317.28/136,005.70
  6. Step 6: Final answer
    x = 91,798.36

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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.