Home / 151,968.51-209,715.21-83,990.07

Finding the Fourth Proportional to 151,968.51, 209,715.21 and 83,990.07

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Solution

The fourth proportional to 151,968.51, 209,715.21 and 83,990.07 is: 115,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,968.51 : 209,715.21 = 83,990.07 : x
  2. Step 2: Convert to fraction form
    151,968.51/209,715.21 = 83,990.07/x
  3. Step 3: Cross multiply
    151,968.51x = 209,715.21 × 83,990.07
  4. Step 4: Simplify right side
    151,968.51x = 17,613,995,167.96
  5. Step 5: Solve for x
    x = 17,613,995,167.96/151,968.51
  6. Step 6: Final answer
    x = 115,905.56

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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.