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Finding the Fourth Proportional to 188,463.63, 260,068.81 and 103,580.76

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Solution

The fourth proportional to 188,463.63, 260,068.81 and 103,580.76 is: 142,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,463.63 : 260,068.81 = 103,580.76 : x
  2. Step 2: Convert to fraction form
    188,463.63/260,068.81 = 103,580.76/x
  3. Step 3: Cross multiply
    188,463.63x = 260,068.81 × 103,580.76
  4. Step 4: Simplify right side
    188,463.63x = 26,938,124,992.10
  5. Step 5: Solve for x
    x = 26,938,124,992.10/188,463.63
  6. Step 6: Final answer
    x = 142,935.40

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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.