Home / 102,743.82-141,783.65-57,421.98

Finding the Fourth Proportional to 102,743.82, 141,783.65 and 57,421.98

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Solution

The fourth proportional to 102,743.82, 141,783.65 and 57,421.98 is: 79,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,743.82 : 141,783.65 = 57,421.98 : x
  2. Step 2: Convert to fraction form
    102,743.82/141,783.65 = 57,421.98/x
  3. Step 3: Cross multiply
    102,743.82x = 141,783.65 × 57,421.98
  4. Step 4: Simplify right side
    102,743.82x = 8,141,497,627.52
  5. Step 5: Solve for x
    x = 8,141,497,627.52/102,743.82
  6. Step 6: Final answer
    x = 79,240.75

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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.