Home / 255,110.56-382,721.20-77,612.96

Finding the Fourth Proportional to 255,110.56, 382,721.20 and 77,612.96

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Solution

The fourth proportional to 255,110.56, 382,721.20 and 77,612.96 is: 116,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,110.56 : 382,721.20 = 77,612.96 : x
  2. Step 2: Convert to fraction form
    255,110.56/382,721.20 = 77,612.96/x
  3. Step 3: Cross multiply
    255,110.56x = 382,721.20 × 77,612.96
  4. Step 4: Simplify right side
    255,110.56x = 29,704,124,950.89
  5. Step 5: Solve for x
    x = 29,704,124,950.89/255,110.56
  6. Step 6: Final answer
    x = 116,436.28

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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.