Home / 157,196.70-235,646.82-78,236.28

Finding the Fourth Proportional to 157,196.70, 235,646.82 and 78,236.28

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Solution

The fourth proportional to 157,196.70, 235,646.82 and 78,236.28 is: 117,280.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,196.70 : 235,646.82 = 78,236.28 : x
  2. Step 2: Convert to fraction form
    157,196.70/235,646.82 = 78,236.28/x
  3. Step 3: Cross multiply
    157,196.70x = 235,646.82 × 78,236.28
  4. Step 4: Simplify right side
    157,196.70x = 18,436,130,590.63
  5. Step 5: Solve for x
    x = 18,436,130,590.63/157,196.70
  6. Step 6: Final answer
    x = 117,280.65

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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.