Home / 151,998.48-209,754-84,010.72

Finding the Fourth Proportional to 151,998.48, 209,754 and 84,010.72

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Solution

The fourth proportional to 151,998.48, 209,754 and 84,010.72 is: 115,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,998.48 : 209,754 = 84,010.72 : x
  2. Step 2: Convert to fraction form
    151,998.48/209,754 = 84,010.72/x
  3. Step 3: Cross multiply
    151,998.48x = 209,754 × 84,010.72
  4. Step 4: Simplify right side
    151,998.48x = 17,621,584,562.88
  5. Step 5: Solve for x
    x = 17,621,584,562.88/151,998.48
  6. Step 6: Final answer
    x = 115,932.64

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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.