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Finding the Fourth Proportional to 152,511.58, 210,473.73 and 87,956.81

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Solution

The fourth proportional to 152,511.58, 210,473.73 and 87,956.81 is: 121,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,511.58 : 210,473.73 = 87,956.81 : x
  2. Step 2: Convert to fraction form
    152,511.58/210,473.73 = 87,956.81/x
  3. Step 3: Cross multiply
    152,511.58x = 210,473.73 × 87,956.81
  4. Step 4: Simplify right side
    152,511.58x = 18,512,597,879.60
  5. Step 5: Solve for x
    x = 18,512,597,879.60/152,511.58
  6. Step 6: Final answer
    x = 121,384.87

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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.