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Finding the Fourth Proportional to 127,070.70, 190,569.60 and 38,302.80

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Solution

The fourth proportional to 127,070.70, 190,569.60 and 38,302.80 is: 57,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,070.70 : 190,569.60 = 38,302.80 : x
  2. Step 2: Convert to fraction form
    127,070.70/190,569.60 = 38,302.80/x
  3. Step 3: Cross multiply
    127,070.70x = 190,569.60 × 38,302.80
  4. Step 4: Simplify right side
    127,070.70x = 7,299,349,274.88
  5. Step 5: Solve for x
    x = 7,299,349,274.88/127,070.70
  6. Step 6: Final answer
    x = 57,443.21

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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.