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Finding the Fourth Proportional to 188,889, 260,668.55 and 104,009.10

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Solution

The fourth proportional to 188,889, 260,668.55 and 104,009.10 is: 143,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,889 : 260,668.55 = 104,009.10 : x
  2. Step 2: Convert to fraction form
    188,889/260,668.55 = 104,009.10/x
  3. Step 3: Cross multiply
    188,889x = 260,668.55 × 104,009.10
  4. Step 4: Simplify right side
    188,889x = 27,111,901,283.81
  5. Step 5: Solve for x
    x = 27,111,901,283.81/188,889
  6. Step 6: Final answer
    x = 143,533.51

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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.