Home / 111,480.03-153,970.23-73,409.79

Finding the Fourth Proportional to 111,480.03, 153,970.23 and 73,409.79

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Solution

The fourth proportional to 111,480.03, 153,970.23 and 73,409.79 is: 101,389.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,480.03 : 153,970.23 = 73,409.79 : x
  2. Step 2: Convert to fraction form
    111,480.03/153,970.23 = 73,409.79/x
  3. Step 3: Cross multiply
    111,480.03x = 153,970.23 × 73,409.79
  4. Step 4: Simplify right side
    111,480.03x = 11,302,922,250.55
  5. Step 5: Solve for x
    x = 11,302,922,250.55/111,480.03
  6. Step 6: Final answer
    x = 101,389.66

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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.