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Finding the Fourth Proportional to 188,411.38, 260,007.65 and 103,533.91

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Solution

The fourth proportional to 188,411.38, 260,007.65 and 103,533.91 is: 142,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,411.38 : 260,007.65 = 103,533.91 : x
  2. Step 2: Convert to fraction form
    188,411.38/260,007.65 = 103,533.91/x
  3. Step 3: Cross multiply
    188,411.38x = 260,007.65 × 103,533.91
  4. Step 4: Simplify right side
    188,411.38x = 26,919,608,116.74
  5. Step 5: Solve for x
    x = 26,919,608,116.74/188,411.38
  6. Step 6: Final answer
    x = 142,876.76

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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.