Home / 138,097.22-190,600.34-86,438.28

Finding the Fourth Proportional to 138,097.22, 190,600.34 and 86,438.28

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Solution

The fourth proportional to 138,097.22, 190,600.34 and 86,438.28 is: 119,301.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,097.22 : 190,600.34 = 86,438.28 : x
  2. Step 2: Convert to fraction form
    138,097.22/190,600.34 = 86,438.28/x
  3. Step 3: Cross multiply
    138,097.22x = 190,600.34 × 86,438.28
  4. Step 4: Simplify right side
    138,097.22x = 16,475,165,557.02
  5. Step 5: Solve for x
    x = 16,475,165,557.02/138,097.22
  6. Step 6: Final answer
    x = 119,301.21

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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.