Home / 138,313.45-190,852.25-77,872.06

Finding the Fourth Proportional to 138,313.45, 190,852.25 and 77,872.06

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Solution

The fourth proportional to 138,313.45, 190,852.25 and 77,872.06 is: 107,452.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,313.45 : 190,852.25 = 77,872.06 : x
  2. Step 2: Convert to fraction form
    138,313.45/190,852.25 = 77,872.06/x
  3. Step 3: Cross multiply
    138,313.45x = 190,852.25 × 77,872.06
  4. Step 4: Simplify right side
    138,313.45x = 14,862,056,996.64
  5. Step 5: Solve for x
    x = 14,862,056,996.64/138,313.45
  6. Step 6: Final answer
    x = 107,452.00

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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.