Home / 149,917.68-206,886.60-86,254.20

Finding the Fourth Proportional to 149,917.68, 206,886.60 and 86,254.20

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Solution

The fourth proportional to 149,917.68, 206,886.60 and 86,254.20 is: 119,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,917.68 : 206,886.60 = 86,254.20 : x
  2. Step 2: Convert to fraction form
    149,917.68/206,886.60 = 86,254.20/x
  3. Step 3: Cross multiply
    149,917.68x = 206,886.60 × 86,254.20
  4. Step 4: Simplify right side
    149,917.68x = 17,844,838,173.72
  5. Step 5: Solve for x
    x = 17,844,838,173.72/149,917.68
  6. Step 6: Final answer
    x = 119,030.91

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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.