Home / 205,990.32-308,981.16-65,746.56

Finding the Fourth Proportional to 205,990.32, 308,981.16 and 65,746.56

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Solution

The fourth proportional to 205,990.32, 308,981.16 and 65,746.56 is: 98,618.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,990.32 : 308,981.16 = 65,746.56 : x
  2. Step 2: Convert to fraction form
    205,990.32/308,981.16 = 65,746.56/x
  3. Step 3: Cross multiply
    205,990.32x = 308,981.16 × 65,746.56
  4. Step 4: Simplify right side
    205,990.32x = 20,314,448,374.81
  5. Step 5: Solve for x
    x = 20,314,448,374.81/205,990.32
  6. Step 6: Final answer
    x = 98,618.46

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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.