Home / 130,836,638.14-180,555,754.80-72,101,410.72

Finding the Fourth Proportional to 130,836,638.14, 180,555,754.80 and 72,101,410.72

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Solution

The fourth proportional to 130,836,638.14, 180,555,754.80 and 72,101,410.72 is: 99,500,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836,638.14 : 180,555,754.80 = 72,101,410.72 : x
  2. Step 2: Convert to fraction form
    130,836,638.14/180,555,754.80 = 72,101,410.72/x
  3. Step 3: Cross multiply
    130,836,638.14x = 180,555,754.80 × 72,101,410.72
  4. Step 4: Simplify right side
    130,836,638.14x = 13,018,324,634,694,412
  5. Step 5: Solve for x
    x = 13,018,324,634,694,412/130,836,638.14
  6. Step 6: Final answer
    x = 99,500,604.87

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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.