Home / 205,708.10-308,501.67-87,378.50

Finding the Fourth Proportional to 205,708.10, 308,501.67 and 87,378.50

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Solution

The fourth proportional to 205,708.10, 308,501.67 and 87,378.50 is: 131,042.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,708.10 : 308,501.67 = 87,378.50 : x
  2. Step 2: Convert to fraction form
    205,708.10/308,501.67 = 87,378.50/x
  3. Step 3: Cross multiply
    205,708.10x = 308,501.67 × 87,378.50
  4. Step 4: Simplify right side
    205,708.10x = 26,956,413,172.10
  5. Step 5: Solve for x
    x = 26,956,413,172.10/205,708.10
  6. Step 6: Final answer
    x = 131,042.06

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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.