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Finding the Fourth Proportional to 188,490.48, 260,177.48 and 120,690.06

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Solution

The fourth proportional to 188,490.48, 260,177.48 and 120,690.06 is: 166,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,490.48 : 260,177.48 = 120,690.06 : x
  2. Step 2: Convert to fraction form
    188,490.48/260,177.48 = 120,690.06/x
  3. Step 3: Cross multiply
    188,490.48x = 260,177.48 × 120,690.06
  4. Step 4: Simplify right side
    188,490.48x = 31,400,835,671.85
  5. Step 5: Solve for x
    x = 31,400,835,671.85/188,490.48
  6. Step 6: Final answer
    x = 166,591.10

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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.