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Finding the Fourth Proportional to 188,455.62, 260,065.68 and 103,570.86

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Solution

The fourth proportional to 188,455.62, 260,065.68 and 103,570.86 is: 142,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,455.62 : 260,065.68 = 103,570.86 : x
  2. Step 2: Convert to fraction form
    188,455.62/260,065.68 = 103,570.86/x
  3. Step 3: Cross multiply
    188,455.62x = 260,065.68 × 103,570.86
  4. Step 4: Simplify right side
    188,455.62x = 26,935,226,134.08
  5. Step 5: Solve for x
    x = 26,935,226,134.08/188,455.62
  6. Step 6: Final answer
    x = 142,926.10

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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.