Home / 154,617.86-213,385.69-86,633.75

Finding the Fourth Proportional to 154,617.86, 213,385.69 and 86,633.75

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Solution

The fourth proportional to 154,617.86, 213,385.69 and 86,633.75 is: 119,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,617.86 : 213,385.69 = 86,633.75 : x
  2. Step 2: Convert to fraction form
    154,617.86/213,385.69 = 86,633.75/x
  3. Step 3: Cross multiply
    154,617.86x = 213,385.69 × 86,633.75
  4. Step 4: Simplify right side
    154,617.86x = 18,486,403,162.79
  5. Step 5: Solve for x
    x = 18,486,403,162.79/154,617.86
  6. Step 6: Final answer
    x = 119,561.89

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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.