Home / 258,536.01-387,804.12-81,056.85

Finding the Fourth Proportional to 258,536.01, 387,804.12 and 81,056.85

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Solution

The fourth proportional to 258,536.01, 387,804.12 and 81,056.85 is: 121,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,536.01 : 387,804.12 = 81,056.85 : x
  2. Step 2: Convert to fraction form
    258,536.01/387,804.12 = 81,056.85/x
  3. Step 3: Cross multiply
    258,536.01x = 387,804.12 × 81,056.85
  4. Step 4: Simplify right side
    258,536.01x = 31,434,180,384.22
  5. Step 5: Solve for x
    x = 31,434,180,384.22/258,536.01
  6. Step 6: Final answer
    x = 121,585.31

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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.