Home / 260,983.16-391,536.02-81,059.40

Finding the Fourth Proportional to 260,983.16, 391,536.02 and 81,059.40

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Solution

The fourth proportional to 260,983.16, 391,536.02 and 81,059.40 is: 121,608.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,983.16 : 391,536.02 = 81,059.40 : x
  2. Step 2: Convert to fraction form
    260,983.16/391,536.02 = 81,059.40/x
  3. Step 3: Cross multiply
    260,983.16x = 391,536.02 × 81,059.40
  4. Step 4: Simplify right side
    260,983.16x = 31,737,674,859.59
  5. Step 5: Solve for x
    x = 31,737,674,859.59/260,983.16
  6. Step 6: Final answer
    x = 121,608.13

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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.