Home / 112,485.69-155,357.87-76,613.49

Finding the Fourth Proportional to 112,485.69, 155,357.87 and 76,613.49

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Solution

The fourth proportional to 112,485.69, 155,357.87 and 76,613.49 is: 105,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,485.69 : 155,357.87 = 76,613.49 : x
  2. Step 2: Convert to fraction form
    112,485.69/155,357.87 = 76,613.49/x
  3. Step 3: Cross multiply
    112,485.69x = 155,357.87 × 76,613.49
  4. Step 4: Simplify right side
    112,485.69x = 11,902,508,236.60
  5. Step 5: Solve for x
    x = 11,902,508,236.60/112,485.69
  6. Step 6: Final answer
    x = 105,813.53

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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.