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Finding the Fourth Proportional to 127,292.80, 190,890.60 and 38,516.80

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Solution

The fourth proportional to 127,292.80, 190,890.60 and 38,516.80 is: 57,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,292.80 : 190,890.60 = 38,516.80 : x
  2. Step 2: Convert to fraction form
    127,292.80/190,890.60 = 38,516.80/x
  3. Step 3: Cross multiply
    127,292.80x = 190,890.60 × 38,516.80
  4. Step 4: Simplify right side
    127,292.80x = 7,352,495,062.08
  5. Step 5: Solve for x
    x = 7,352,495,062.08/127,292.80
  6. Step 6: Final answer
    x = 57,760.49

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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.