Home / 131,021.43-180,810.15-74,435.91

Finding the Fourth Proportional to 131,021.43, 180,810.15 and 74,435.91

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Solution

The fourth proportional to 131,021.43, 180,810.15 and 74,435.91 is: 102,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.43 : 180,810.15 = 74,435.91 : x
  2. Step 2: Convert to fraction form
    131,021.43/180,810.15 = 74,435.91/x
  3. Step 3: Cross multiply
    131,021.43x = 180,810.15 × 74,435.91
  4. Step 4: Simplify right side
    131,021.43x = 13,458,768,052.49
  5. Step 5: Solve for x
    x = 13,458,768,052.49/131,021.43
  6. Step 6: Final answer
    x = 102,721.88

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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.