Home / 127,128.31-190,723.29-38,376.51

Finding the Fourth Proportional to 127,128.31, 190,723.29 and 38,376.51

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Solution

The fourth proportional to 127,128.31, 190,723.29 and 38,376.51 is: 57,574.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.31 : 190,723.29 = 38,376.51 : x
  2. Step 2: Convert to fraction form
    127,128.31/190,723.29 = 38,376.51/x
  3. Step 3: Cross multiply
    127,128.31x = 190,723.29 × 38,376.51
  4. Step 4: Simplify right side
    127,128.31x = 7,319,294,245.92
  5. Step 5: Solve for x
    x = 7,319,294,245.92/127,128.31
  6. Step 6: Final answer
    x = 57,574.07

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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.