Home / 115,430-159,305.64-67,723.52

Finding the Fourth Proportional to 115,430, 159,305.64 and 67,723.52

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Solution

The fourth proportional to 115,430, 159,305.64 and 67,723.52 is: 93,465.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430 : 159,305.64 = 67,723.52 : x
  2. Step 2: Convert to fraction form
    115,430/159,305.64 = 67,723.52/x
  3. Step 3: Cross multiply
    115,430x = 159,305.64 × 67,723.52
  4. Step 4: Simplify right side
    115,430x = 10,788,738,696.65
  5. Step 5: Solve for x
    x = 10,788,738,696.65/115,430
  6. Step 6: Final answer
    x = 93,465.64

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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.