Home / 145,238.13-217,879.34-74,121.93

Finding the Fourth Proportional to 145,238.13, 217,879.34 and 74,121.93

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Solution

The fourth proportional to 145,238.13, 217,879.34 and 74,121.93 is: 111,194.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,238.13 : 217,879.34 = 74,121.93 : x
  2. Step 2: Convert to fraction form
    145,238.13/217,879.34 = 74,121.93/x
  3. Step 3: Cross multiply
    145,238.13x = 217,879.34 × 74,121.93
  4. Step 4: Simplify right side
    145,238.13x = 16,149,636,817.32
  5. Step 5: Solve for x
    x = 16,149,636,817.32/145,238.13
  6. Step 6: Final answer
    x = 111,194.19

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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.