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Finding the Fourth Proportional to 188,816.52, 260,559.48 and 103,931.76

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Solution

The fourth proportional to 188,816.52, 260,559.48 and 103,931.76 is: 143,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,816.52 : 260,559.48 = 103,931.76 : x
  2. Step 2: Convert to fraction form
    188,816.52/260,559.48 = 103,931.76/x
  3. Step 3: Cross multiply
    188,816.52x = 260,559.48 × 103,931.76
  4. Step 4: Simplify right side
    188,816.52x = 27,080,405,341.08
  5. Step 5: Solve for x
    x = 27,080,405,341.08/188,816.52
  6. Step 6: Final answer
    x = 143,421.80

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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.