Home / 153,998.37-212,515.51-86,016.31

Finding the Fourth Proportional to 153,998.37, 212,515.51 and 86,016.31

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Solution

The fourth proportional to 153,998.37, 212,515.51 and 86,016.31 is: 118,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,998.37 : 212,515.51 = 86,016.31 : x
  2. Step 2: Convert to fraction form
    153,998.37/212,515.51 = 86,016.31/x
  3. Step 3: Cross multiply
    153,998.37x = 212,515.51 × 86,016.31
  4. Step 4: Simplify right side
    153,998.37x = 18,279,799,241.64
  5. Step 5: Solve for x
    x = 18,279,799,241.64/153,998.37
  6. Step 6: Final answer
    x = 118,701.25

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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.