Home / 157,354.22-235,907.40-78,427.82

Finding the Fourth Proportional to 157,354.22, 235,907.40 and 78,427.82

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Solution

The fourth proportional to 157,354.22, 235,907.40 and 78,427.82 is: 117,579.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,354.22 : 235,907.40 = 78,427.82 : x
  2. Step 2: Convert to fraction form
    157,354.22/235,907.40 = 78,427.82/x
  3. Step 3: Cross multiply
    157,354.22x = 235,907.40 × 78,427.82
  4. Step 4: Simplify right side
    157,354.22x = 18,501,703,103.87
  5. Step 5: Solve for x
    x = 18,501,703,103.87/157,354.22
  6. Step 6: Final answer
    x = 117,579.96

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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.