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Finding the Fourth Proportional to 124,551.75, 171,959.18 and 79,917.51

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Solution

The fourth proportional to 124,551.75, 171,959.18 and 79,917.51 is: 110,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,551.75 : 171,959.18 = 79,917.51 : x
  2. Step 2: Convert to fraction form
    124,551.75/171,959.18 = 79,917.51/x
  3. Step 3: Cross multiply
    124,551.75x = 171,959.18 × 79,917.51
  4. Step 4: Simplify right side
    124,551.75x = 13,742,549,087.65
  5. Step 5: Solve for x
    x = 13,742,549,087.65/124,551.75
  6. Step 6: Final answer
    x = 110,336.06

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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.