Home / 86,820.01-130,880.76-81,033.34

Finding the Fourth Proportional to 86,820.01, 130,880.76 and 81,033.34

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Solution

The fourth proportional to 86,820.01, 130,880.76 and 81,033.34 is: 122,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,820.01 : 130,880.76 = 81,033.34 : x
  2. Step 2: Convert to fraction form
    86,820.01/130,880.76 = 81,033.34/x
  3. Step 3: Cross multiply
    86,820.01x = 130,880.76 × 81,033.34
  4. Step 4: Simplify right side
    86,820.01x = 10,605,704,645.40
  5. Step 5: Solve for x
    x = 10,605,704,645.40/86,820.01
  6. Step 6: Final answer
    x = 122,157.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.