Home / 85,172.22-127,871.37-72,771.93

Finding the Fourth Proportional to 85,172.22, 127,871.37 and 72,771.93

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Solution

The fourth proportional to 85,172.22, 127,871.37 and 72,771.93 is: 109,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,172.22 : 127,871.37 = 72,771.93 : x
  2. Step 2: Convert to fraction form
    85,172.22/127,871.37 = 72,771.93/x
  3. Step 3: Cross multiply
    85,172.22x = 127,871.37 × 72,771.93
  4. Step 4: Simplify right side
    85,172.22x = 9,305,446,386.64
  5. Step 5: Solve for x
    x = 9,305,446,386.64/85,172.22
  6. Step 6: Final answer
    x = 109,254.48

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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.