Home / 111,556.12-153,718.52-103,680.76

Finding the Fourth Proportional to 111,556.12, 153,718.52 and 103,680.76

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Solution

The fourth proportional to 111,556.12, 153,718.52 and 103,680.76 is: 142,866.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,556.12 : 153,718.52 = 103,680.76 : x
  2. Step 2: Convert to fraction form
    111,556.12/153,718.52 = 103,680.76/x
  3. Step 3: Cross multiply
    111,556.12x = 153,718.52 × 103,680.76
  4. Step 4: Simplify right side
    111,556.12x = 15,937,652,979.68
  5. Step 5: Solve for x
    x = 15,937,652,979.68/111,556.12
  6. Step 6: Final answer
    x = 142,866.68

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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.