Home / 127,149.43-190,760.25-103,678.98

Finding the Fourth Proportional to 127,149.43, 190,760.25 and 103,678.98

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Solution

The fourth proportional to 127,149.43, 190,760.25 and 103,678.98 is: 155,547.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,149.43 : 190,760.25 = 103,678.98 : x
  2. Step 2: Convert to fraction form
    127,149.43/190,760.25 = 103,678.98/x
  3. Step 3: Cross multiply
    127,149.43x = 190,760.25 × 103,678.98
  4. Step 4: Simplify right side
    127,149.43x = 19,777,828,144.55
  5. Step 5: Solve for x
    x = 19,777,828,144.55/127,149.43
  6. Step 6: Final answer
    x = 155,547.91

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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.