Home / 111,669.72-154,113.66-61,379.16

Finding the Fourth Proportional to 111,669.72, 154,113.66 and 61,379.16

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Solution

The fourth proportional to 111,669.72, 154,113.66 and 61,379.16 is: 84,708.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,669.72 : 154,113.66 = 61,379.16 : x
  2. Step 2: Convert to fraction form
    111,669.72/154,113.66 = 61,379.16/x
  3. Step 3: Cross multiply
    111,669.72x = 154,113.66 × 61,379.16
  4. Step 4: Simplify right side
    111,669.72x = 9,459,366,995.33
  5. Step 5: Solve for x
    x = 9,459,366,995.33/111,669.72
  6. Step 6: Final answer
    x = 84,708.43

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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.