Home / 151,428.23-208,968.09-83,451.49

Finding the Fourth Proportional to 151,428.23, 208,968.09 and 83,451.49

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Solution

The fourth proportional to 151,428.23, 208,968.09 and 83,451.49 is: 115,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,428.23 : 208,968.09 = 83,451.49 : x
  2. Step 2: Convert to fraction form
    151,428.23/208,968.09 = 83,451.49/x
  3. Step 3: Cross multiply
    151,428.23x = 208,968.09 × 83,451.49
  4. Step 4: Simplify right side
    151,428.23x = 17,438,697,010.86
  5. Step 5: Solve for x
    x = 17,438,697,010.86/151,428.23
  6. Step 6: Final answer
    x = 115,161.47

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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.