Home / 98,735.12-136,112.74-70,391.60

Finding the Fourth Proportional to 98,735.12, 136,112.74 and 70,391.60

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Solution

The fourth proportional to 98,735.12, 136,112.74 and 70,391.60 is: 97,039.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,735.12 : 136,112.74 = 70,391.60 : x
  2. Step 2: Convert to fraction form
    98,735.12/136,112.74 = 70,391.60/x
  3. Step 3: Cross multiply
    98,735.12x = 136,112.74 × 70,391.60
  4. Step 4: Simplify right side
    98,735.12x = 9,581,193,548.98
  5. Step 5: Solve for x
    x = 9,581,193,548.98/98,735.12
  6. Step 6: Final answer
    x = 97,039.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.