Home / 130,180.64-179,780.28-112,174.88

Finding the Fourth Proportional to 130,180.64, 179,780.28 and 112,174.88

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Solution

The fourth proportional to 130,180.64, 179,780.28 and 112,174.88 is: 154,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,180.64 : 179,780.28 = 112,174.88 : x
  2. Step 2: Convert to fraction form
    130,180.64/179,780.28 = 112,174.88/x
  3. Step 3: Cross multiply
    130,180.64x = 179,780.28 × 112,174.88
  4. Step 4: Simplify right side
    130,180.64x = 20,166,831,335.37
  5. Step 5: Solve for x
    x = 20,166,831,335.37/130,180.64
  6. Step 6: Final answer
    x = 154,914.21

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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.