Home / 99,007.30-136,541.46-77,749.66

Finding the Fourth Proportional to 99,007.30, 136,541.46 and 77,749.66

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Solution

The fourth proportional to 99,007.30, 136,541.46 and 77,749.66 is: 107,224.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,007.30 : 136,541.46 = 77,749.66 : x
  2. Step 2: Convert to fraction form
    99,007.30/136,541.46 = 77,749.66/x
  3. Step 3: Cross multiply
    99,007.30x = 136,541.46 × 77,749.66
  4. Step 4: Simplify right side
    99,007.30x = 10,616,052,090.90
  5. Step 5: Solve for x
    x = 10,616,052,090.90/99,007.30
  6. Step 6: Final answer
    x = 107,224.94

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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.