Home / 171,973.08-257,930.40-78,456.96

Finding the Fourth Proportional to 171,973.08, 257,930.40 and 78,456.96

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Solution

The fourth proportional to 171,973.08, 257,930.40 and 78,456.96 is: 117,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,973.08 : 257,930.40 = 78,456.96 : x
  2. Step 2: Convert to fraction form
    171,973.08/257,930.40 = 78,456.96/x
  3. Step 3: Cross multiply
    171,973.08x = 257,930.40 × 78,456.96
  4. Step 4: Simplify right side
    171,973.08x = 20,236,435,075.58
  5. Step 5: Solve for x
    x = 20,236,435,075.58/171,973.08
  6. Step 6: Final answer
    x = 117,672.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.