Home / 120,890.07-181,356.99-39,841.40

Finding the Fourth Proportional to 120,890.07, 181,356.99 and 39,841.40

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Solution

The fourth proportional to 120,890.07, 181,356.99 and 39,841.40 is: 59,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,890.07 : 181,356.99 = 39,841.40 : x
  2. Step 2: Convert to fraction form
    120,890.07/181,356.99 = 39,841.40/x
  3. Step 3: Cross multiply
    120,890.07x = 181,356.99 × 39,841.40
  4. Step 4: Simplify right side
    120,890.07x = 7,225,515,474.60
  5. Step 5: Solve for x
    x = 7,225,515,474.60/120,890.07
  6. Step 6: Final answer
    x = 59,769.31

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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.