Home / 102,713.21-141,743.93-56,772.54

Finding the Fourth Proportional to 102,713.21, 141,743.93 and 56,772.54

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Solution

The fourth proportional to 102,713.21, 141,743.93 and 56,772.54 is: 78,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,713.21 : 141,743.93 = 56,772.54 : x
  2. Step 2: Convert to fraction form
    102,713.21/141,743.93 = 56,772.54/x
  3. Step 3: Cross multiply
    102,713.21x = 141,743.93 × 56,772.54
  4. Step 4: Simplify right side
    102,713.21x = 8,047,162,651.82
  5. Step 5: Solve for x
    x = 8,047,162,651.82/102,713.21
  6. Step 6: Final answer
    x = 78,345.94

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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.