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Finding the Fourth Proportional to 188,503.20, 282,657.60 and 70,113.60

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Solution

The fourth proportional to 188,503.20, 282,657.60 and 70,113.60 is: 105,134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,503.20 : 282,657.60 = 70,113.60 : x
  2. Step 2: Convert to fraction form
    188,503.20/282,657.60 = 70,113.60/x
  3. Step 3: Cross multiply
    188,503.20x = 282,657.60 × 70,113.60
  4. Step 4: Simplify right side
    188,503.20x = 19,818,141,903.36
  5. Step 5: Solve for x
    x = 19,818,141,903.36/188,503.20
  6. Step 6: Final answer
    x = 105,134.25

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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.