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Finding the Fourth Proportional to 127,312.38, 190,978.29 and 38,573.24

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Solution

The fourth proportional to 127,312.38, 190,978.29 and 38,573.24 is: 57,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,312.38 : 190,978.29 = 38,573.24 : x
  2. Step 2: Convert to fraction form
    127,312.38/190,978.29 = 38,573.24/x
  3. Step 3: Cross multiply
    127,312.38x = 190,978.29 × 38,573.24
  4. Step 4: Simplify right side
    127,312.38x = 7,366,650,460.07
  5. Step 5: Solve for x
    x = 7,366,650,460.07/127,312.38
  6. Step 6: Final answer
    x = 57,862.80

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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.