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Finding the Fourth Proportional to 188,372.94, 282,669.57 and 70,128.06

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Solution

The fourth proportional to 188,372.94, 282,669.57 and 70,128.06 is: 105,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,372.94 : 282,669.57 = 70,128.06 : x
  2. Step 2: Convert to fraction form
    188,372.94/282,669.57 = 70,128.06/x
  3. Step 3: Cross multiply
    188,372.94x = 282,669.57 × 70,128.06
  4. Step 4: Simplify right side
    188,372.94x = 19,823,068,565.13
  5. Step 5: Solve for x
    x = 19,823,068,565.13/188,372.94
  6. Step 6: Final answer
    x = 105,233.10

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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.