Home / 151,459.12-209,015.09-83,478.61

Finding the Fourth Proportional to 151,459.12, 209,015.09 and 83,478.61

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Solution

The fourth proportional to 151,459.12, 209,015.09 and 83,478.61 is: 115,201.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,459.12 : 209,015.09 = 83,478.61 : x
  2. Step 2: Convert to fraction form
    151,459.12/209,015.09 = 83,478.61/x
  3. Step 3: Cross multiply
    151,459.12x = 209,015.09 × 83,478.61
  4. Step 4: Simplify right side
    151,459.12x = 17,448,289,182.22
  5. Step 5: Solve for x
    x = 17,448,289,182.22/151,459.12
  6. Step 6: Final answer
    x = 115,201.31

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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.