Home / 111,970.18-154,511.76-61,669.18

Finding the Fourth Proportional to 111,970.18, 154,511.76 and 61,669.18

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Solution

The fourth proportional to 111,970.18, 154,511.76 and 61,669.18 is: 85,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,970.18 : 154,511.76 = 61,669.18 : x
  2. Step 2: Convert to fraction form
    111,970.18/154,511.76 = 61,669.18/x
  3. Step 3: Cross multiply
    111,970.18x = 154,511.76 × 61,669.18
  4. Step 4: Simplify right side
    111,970.18x = 9,528,613,539.56
  5. Step 5: Solve for x
    x = 9,528,613,539.56/111,970.18
  6. Step 6: Final answer
    x = 85,099.56

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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.