Home / 131,720.30-181,725.09-83,962.70

Finding the Fourth Proportional to 131,720.30, 181,725.09 and 83,962.70

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Solution

The fourth proportional to 131,720.30, 181,725.09 and 83,962.70 is: 115,837.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,720.30 : 181,725.09 = 83,962.70 : x
  2. Step 2: Convert to fraction form
    131,720.30/181,725.09 = 83,962.70/x
  3. Step 3: Cross multiply
    131,720.30x = 181,725.09 × 83,962.70
  4. Step 4: Simplify right side
    131,720.30x = 15,258,129,214.14
  5. Step 5: Solve for x
    x = 15,258,129,214.14/131,720.30
  6. Step 6: Final answer
    x = 115,837.34

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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.