Home / 113,049.36-155,939.04-81,261.36

Finding the Fourth Proportional to 113,049.36, 155,939.04 and 81,261.36

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Solution

The fourth proportional to 113,049.36, 155,939.04 and 81,261.36 is: 112,091.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,049.36 : 155,939.04 = 81,261.36 : x
  2. Step 2: Convert to fraction form
    113,049.36/155,939.04 = 81,261.36/x
  3. Step 3: Cross multiply
    113,049.36x = 155,939.04 × 81,261.36
  4. Step 4: Simplify right side
    113,049.36x = 12,671,818,467.49
  5. Step 5: Solve for x
    x = 12,671,818,467.49/113,049.36
  6. Step 6: Final answer
    x = 112,091.02

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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.