Home / 154,852.18-213,712.20-86,887.51

Finding the Fourth Proportional to 154,852.18, 213,712.20 and 86,887.51

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Solution

The fourth proportional to 154,852.18, 213,712.20 and 86,887.51 is: 119,913.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,852.18 : 213,712.20 = 86,887.51 : x
  2. Step 2: Convert to fraction form
    154,852.18/213,712.20 = 86,887.51/x
  3. Step 3: Cross multiply
    154,852.18x = 213,712.20 × 86,887.51
  4. Step 4: Simplify right side
    154,852.18x = 18,568,920,380.34
  5. Step 5: Solve for x
    x = 18,568,920,380.34/154,852.18
  6. Step 6: Final answer
    x = 119,913.85

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1.5x scale

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.