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Finding the Fourth Proportional to 188,695.68, 260,407.20 and 103,819.20

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Solution

The fourth proportional to 188,695.68, 260,407.20 and 103,819.20 is: 143,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,695.68 : 260,407.20 = 103,819.20 : x
  2. Step 2: Convert to fraction form
    188,695.68/260,407.20 = 103,819.20/x
  3. Step 3: Cross multiply
    188,695.68x = 260,407.20 × 103,819.20
  4. Step 4: Simplify right side
    188,695.68x = 27,035,267,178.24
  5. Step 5: Solve for x
    x = 27,035,267,178.24/188,695.68
  6. Step 6: Final answer
    x = 143,274.44

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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.