Home / 115,059.04-172,358.80-91,406.64

Finding the Fourth Proportional to 115,059.04, 172,358.80 and 91,406.64

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Solution

The fourth proportional to 115,059.04, 172,358.80 and 91,406.64 is: 136,927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,059.04 : 172,358.80 = 91,406.64 : x
  2. Step 2: Convert to fraction form
    115,059.04/172,358.80 = 91,406.64/x
  3. Step 3: Cross multiply
    115,059.04x = 172,358.80 × 91,406.64
  4. Step 4: Simplify right side
    115,059.04x = 15,754,738,782.43
  5. Step 5: Solve for x
    x = 15,754,738,782.43/115,059.04
  6. Step 6: Final answer
    x = 136,927.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.