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Finding the Fourth Proportional to 127,271.80, 190,907.70 and 64,934.20

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Solution

The fourth proportional to 127,271.80, 190,907.70 and 64,934.20 is: 97,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,271.80 : 190,907.70 = 64,934.20 : x
  2. Step 2: Convert to fraction form
    127,271.80/190,907.70 = 64,934.20/x
  3. Step 3: Cross multiply
    127,271.80x = 190,907.70 × 64,934.20
  4. Step 4: Simplify right side
    127,271.80x = 12,396,438,773.34
  5. Step 5: Solve for x
    x = 12,396,438,773.34/127,271.80
  6. Step 6: Final answer
    x = 97,401.30

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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.