Home / 89,239.12-133,595.66-78,167.44

Finding the Fourth Proportional to 89,239.12, 133,595.66 and 78,167.44

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Solution

The fourth proportional to 89,239.12, 133,595.66 and 78,167.44 is: 117,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,239.12 : 133,595.66 = 78,167.44 : x
  2. Step 2: Convert to fraction form
    89,239.12/133,595.66 = 78,167.44/x
  3. Step 3: Cross multiply
    89,239.12x = 133,595.66 × 78,167.44
  4. Step 4: Simplify right side
    89,239.12x = 10,442,830,737.31
  5. Step 5: Solve for x
    x = 10,442,830,737.31/89,239.12
  6. Step 6: Final answer
    x = 117,020.77

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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.