Home / 112,605.39-155,215.31-76,295.79

Finding the Fourth Proportional to 112,605.39, 155,215.31 and 76,295.79

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Solution

The fourth proportional to 112,605.39, 155,215.31 and 76,295.79 is: 105,166.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,605.39 : 155,215.31 = 76,295.79 : x
  2. Step 2: Convert to fraction form
    112,605.39/155,215.31 = 76,295.79/x
  3. Step 3: Cross multiply
    112,605.39x = 155,215.31 × 76,295.79
  4. Step 4: Simplify right side
    112,605.39x = 11,842,274,315.07
  5. Step 5: Solve for x
    x = 11,842,274,315.07/112,605.39
  6. Step 6: Final answer
    x = 105,166.14

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1.5x scale

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.