Home / 170,397.09-255,643.05-74,342.72

Finding the Fourth Proportional to 170,397.09, 255,643.05 and 74,342.72

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Solution

The fourth proportional to 170,397.09, 255,643.05 and 74,342.72 is: 111,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,397.09 : 255,643.05 = 74,342.72 : x
  2. Step 2: Convert to fraction form
    170,397.09/255,643.05 = 74,342.72/x
  3. Step 3: Cross multiply
    170,397.09x = 255,643.05 × 74,342.72
  4. Step 4: Simplify right side
    170,397.09x = 19,005,198,407.88
  5. Step 5: Solve for x
    x = 19,005,198,407.88/170,397.09
  6. Step 6: Final answer
    x = 111,534.76

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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.