Home / 128,814.98-177,767.51-71,452.43

Finding the Fourth Proportional to 128,814.98, 177,767.51 and 71,452.43

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Solution

The fourth proportional to 128,814.98, 177,767.51 and 71,452.43 is: 98,605.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,814.98 : 177,767.51 = 71,452.43 : x
  2. Step 2: Convert to fraction form
    128,814.98/177,767.51 = 71,452.43/x
  3. Step 3: Cross multiply
    128,814.98x = 177,767.51 × 71,452.43
  4. Step 4: Simplify right side
    128,814.98x = 12,701,919,318.45
  5. Step 5: Solve for x
    x = 12,701,919,318.45/128,814.98
  6. Step 6: Final answer
    x = 98,605.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.