Home / 188,472.09-282,721.86-70,143.39

Finding the Fourth Proportional to 188,472.09, 282,721.86 and 70,143.39

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Solution

The fourth proportional to 188,472.09, 282,721.86 and 70,143.39 is: 105,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,472.09 : 282,721.86 = 70,143.39 : x
  2. Step 2: Convert to fraction form
    188,472.09/282,721.86 = 70,143.39/x
  3. Step 3: Cross multiply
    188,472.09x = 282,721.86 × 70,143.39
  4. Step 4: Simplify right side
    188,472.09x = 19,831,069,687.51
  5. Step 5: Solve for x
    x = 19,831,069,687.51/188,472.09
  6. Step 6: Final answer
    x = 105,220.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.