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Finding the Fourth Proportional to 188,695.36, 260,393.28 and 103,811.68

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Solution

The fourth proportional to 188,695.36, 260,393.28 and 103,811.68 is: 143,256.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,695.36 : 260,393.28 = 103,811.68 : x
  2. Step 2: Convert to fraction form
    188,695.36/260,393.28 = 103,811.68/x
  3. Step 3: Cross multiply
    188,695.36x = 260,393.28 × 103,811.68
  4. Step 4: Simplify right side
    188,695.36x = 27,031,863,857.51
  5. Step 5: Solve for x
    x = 27,031,863,857.51/188,695.36
  6. Step 6: Final answer
    x = 143,256.64

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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.