Home / 120,879.81-181,314.18-42,000.21

Finding the Fourth Proportional to 120,879.81, 181,314.18 and 42,000.21

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Solution

The fourth proportional to 120,879.81, 181,314.18 and 42,000.21 is: 62,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,879.81 : 181,314.18 = 42,000.21 : x
  2. Step 2: Convert to fraction form
    120,879.81/181,314.18 = 42,000.21/x
  3. Step 3: Cross multiply
    120,879.81x = 181,314.18 × 42,000.21
  4. Step 4: Simplify right side
    120,879.81x = 7,615,233,635.98
  5. Step 5: Solve for x
    x = 7,615,233,635.98/120,879.81
  6. Step 6: Final answer
    x = 62,998.39

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1.5x scale

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.