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Finding the Fourth Proportional to 127,220.60, 190,903.80 and 48,391.40

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Solution

The fourth proportional to 127,220.60, 190,903.80 and 48,391.40 is: 72,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,220.60 : 190,903.80 = 48,391.40 : x
  2. Step 2: Convert to fraction form
    127,220.60/190,903.80 = 48,391.40/x
  3. Step 3: Cross multiply
    127,220.60x = 190,903.80 × 48,391.40
  4. Step 4: Simplify right side
    127,220.60x = 9,238,102,147.32
  5. Step 5: Solve for x
    x = 9,238,102,147.32/127,220.60
  6. Step 6: Final answer
    x = 72,614.83

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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.