Home / 126,921.03-190,136.26-70,590.89

Finding the Fourth Proportional to 126,921.03, 190,136.26 and 70,590.89

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Solution

The fourth proportional to 126,921.03, 190,136.26 and 70,590.89 is: 105,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,921.03 : 190,136.26 = 70,590.89 : x
  2. Step 2: Convert to fraction form
    126,921.03/190,136.26 = 70,590.89/x
  3. Step 3: Cross multiply
    126,921.03x = 190,136.26 × 70,590.89
  4. Step 4: Simplify right side
    126,921.03x = 13,421,888,378.25
  5. Step 5: Solve for x
    x = 13,421,888,378.25/126,921.03
  6. Step 6: Final answer
    x = 105,749.92

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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.