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Finding the Fourth Proportional to 188,515.20, 282,675.60 and 70,125.60

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Solution

The fourth proportional to 188,515.20, 282,675.60 and 70,125.60 is: 105,152.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,515.20 : 282,675.60 = 70,125.60 : x
  2. Step 2: Convert to fraction form
    188,515.20/282,675.60 = 70,125.60/x
  3. Step 3: Cross multiply
    188,515.20x = 282,675.60 × 70,125.60
  4. Step 4: Simplify right side
    188,515.20x = 19,822,796,055.36
  5. Step 5: Solve for x
    x = 19,822,796,055.36/188,515.20
  6. Step 6: Final answer
    x = 105,152.24

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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.