Home / 111,890.48-154,403.16-61,579.76

Finding the Fourth Proportional to 111,890.48, 154,403.16 and 61,579.76

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Solution

The fourth proportional to 111,890.48, 154,403.16 and 61,579.76 is: 84,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,890.48 : 154,403.16 = 61,579.76 : x
  2. Step 2: Convert to fraction form
    111,890.48/154,403.16 = 61,579.76/x
  3. Step 3: Cross multiply
    111,890.48x = 154,403.16 × 61,579.76
  4. Step 4: Simplify right side
    111,890.48x = 9,508,109,536.04
  5. Step 5: Solve for x
    x = 9,508,109,536.04/111,890.48
  6. Step 6: Final answer
    x = 84,976.93

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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.