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Finding the Fourth Proportional to 188,620.59, 260,298.59 and 103,739.07

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Solution

The fourth proportional to 188,620.59, 260,298.59 and 103,739.07 is: 143,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,620.59 : 260,298.59 = 103,739.07 : x
  2. Step 2: Convert to fraction form
    188,620.59/260,298.59 = 103,739.07/x
  3. Step 3: Cross multiply
    188,620.59x = 260,298.59 × 103,739.07
  4. Step 4: Simplify right side
    188,620.59x = 27,003,133,130.22
  5. Step 5: Solve for x
    x = 27,003,133,130.22/188,620.59
  6. Step 6: Final answer
    x = 143,161.11

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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.