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Finding the Fourth Proportional to 188,138.08, 259,670.64 and 112,730.32

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Solution

The fourth proportional to 188,138.08, 259,670.64 and 112,730.32 is: 155,591.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,138.08 : 259,670.64 = 112,730.32 : x
  2. Step 2: Convert to fraction form
    188,138.08/259,670.64 = 112,730.32/x
  3. Step 3: Cross multiply
    188,138.08x = 259,670.64 × 112,730.32
  4. Step 4: Simplify right side
    188,138.08x = 29,272,754,341.80
  5. Step 5: Solve for x
    x = 29,272,754,341.80/188,138.08
  6. Step 6: Final answer
    x = 155,591.86

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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.