Home / 130,178.64-179,777.52-112,172.88

Finding the Fourth Proportional to 130,178.64, 179,777.52 and 112,172.88

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Solution

The fourth proportional to 130,178.64, 179,777.52 and 112,172.88 is: 154,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,178.64 : 179,777.52 = 112,172.88 : x
  2. Step 2: Convert to fraction form
    130,178.64/179,777.52 = 112,172.88/x
  3. Step 3: Cross multiply
    130,178.64x = 179,777.52 × 112,172.88
  4. Step 4: Simplify right side
    130,178.64x = 20,166,162,177.66
  5. Step 5: Solve for x
    x = 20,166,162,177.66/130,178.64
  6. Step 6: Final answer
    x = 154,911.45

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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.