Home / 255,110.81-382,721.57-77,613.20

Finding the Fourth Proportional to 255,110.81, 382,721.57 and 77,613.20

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Solution

The fourth proportional to 255,110.81, 382,721.57 and 77,613.20 is: 116,436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,110.81 : 382,721.57 = 77,613.20 : x
  2. Step 2: Convert to fraction form
    255,110.81/382,721.57 = 77,613.20/x
  3. Step 3: Cross multiply
    255,110.81x = 382,721.57 × 77,613.20
  4. Step 4: Simplify right side
    255,110.81x = 29,704,245,756.72
  5. Step 5: Solve for x
    x = 29,704,245,756.72/255,110.81
  6. Step 6: Final answer
    x = 116,436.64

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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.