Home / 111,981.18-154,533.99-61,680.18

Finding the Fourth Proportional to 111,981.18, 154,533.99 and 61,680.18

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Solution

The fourth proportional to 111,981.18, 154,533.99 and 61,680.18 is: 85,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,981.18 : 154,533.99 = 61,680.18 : x
  2. Step 2: Convert to fraction form
    111,981.18/154,533.99 = 61,680.18/x
  3. Step 3: Cross multiply
    111,981.18x = 154,533.99 × 61,680.18
  4. Step 4: Simplify right side
    111,981.18x = 9,531,684,319.32
  5. Step 5: Solve for x
    x = 9,531,684,319.32/111,981.18
  6. Step 6: Final answer
    x = 85,118.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.