Home / 151,628.36-209,243.78-83,645.40

Finding the Fourth Proportional to 151,628.36, 209,243.78 and 83,645.40

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Solution

The fourth proportional to 151,628.36, 209,243.78 and 83,645.40 is: 115,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,628.36 : 209,243.78 = 83,645.40 : x
  2. Step 2: Convert to fraction form
    151,628.36/209,243.78 = 83,645.40/x
  3. Step 3: Cross multiply
    151,628.36x = 209,243.78 × 83,645.40
  4. Step 4: Simplify right side
    151,628.36x = 17,502,279,675.61
  5. Step 5: Solve for x
    x = 17,502,279,675.61/151,628.36
  6. Step 6: Final answer
    x = 115,428.80

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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.