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Finding the Fourth Proportional to 127,235.60, 190,690.20 and 71,075.60

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Solution

The fourth proportional to 127,235.60, 190,690.20 and 71,075.60 is: 106,522.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,235.60 : 190,690.20 = 71,075.60 : x
  2. Step 2: Convert to fraction form
    127,235.60/190,690.20 = 71,075.60/x
  3. Step 3: Cross multiply
    127,235.60x = 190,690.20 × 71,075.60
  4. Step 4: Simplify right side
    127,235.60x = 13,553,420,379.12
  5. Step 5: Solve for x
    x = 13,553,420,379.12/127,235.60
  6. Step 6: Final answer
    x = 106,522.23

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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.