Home / 100,450.48-138,615.60-60,185.20

Finding the Fourth Proportional to 100,450.48, 138,615.60 and 60,185.20

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Solution

The fourth proportional to 100,450.48, 138,615.60 and 60,185.20 is: 83,051.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,450.48 : 138,615.60 = 60,185.20 : x
  2. Step 2: Convert to fraction form
    100,450.48/138,615.60 = 60,185.20/x
  3. Step 3: Cross multiply
    100,450.48x = 138,615.60 × 60,185.20
  4. Step 4: Simplify right side
    100,450.48x = 8,342,607,609.12
  5. Step 5: Solve for x
    x = 8,342,607,609.12/100,450.48
  6. Step 6: Final answer
    x = 83,051.94

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1.5x scale

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.