Home / 145,383.83-218,324.85-78,953.70

Finding the Fourth Proportional to 145,383.83, 218,324.85 and 78,953.70

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Solution

The fourth proportional to 145,383.83, 218,324.85 and 78,953.70 is: 118,565.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,383.83 : 218,324.85 = 78,953.70 : x
  2. Step 2: Convert to fraction form
    145,383.83/218,324.85 = 78,953.70/x
  3. Step 3: Cross multiply
    145,383.83x = 218,324.85 × 78,953.70
  4. Step 4: Simplify right side
    145,383.83x = 17,237,554,314.68
  5. Step 5: Solve for x
    x = 17,237,554,314.68/145,383.83
  6. Step 6: Final answer
    x = 118,565.83

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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.