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Finding the Fourth Proportional to 188,459.18, 282,563.80 and 68,501.90

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Solution

The fourth proportional to 188,459.18, 282,563.80 and 68,501.90 is: 102,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,459.18 : 282,563.80 = 68,501.90 : x
  2. Step 2: Convert to fraction form
    188,459.18/282,563.80 = 68,501.90/x
  3. Step 3: Cross multiply
    188,459.18x = 282,563.80 × 68,501.90
  4. Step 4: Simplify right side
    188,459.18x = 19,356,155,587.15
  5. Step 5: Solve for x
    x = 19,356,155,587.15/188,459.18
  6. Step 6: Final answer
    x = 102,707.42

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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.