Home / 130,000.64-179,404.16-79,727.36

Finding the Fourth Proportional to 130,000.64, 179,404.16 and 79,727.36

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Solution

The fourth proportional to 130,000.64, 179,404.16 and 79,727.36 is: 110,025.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,000.64 : 179,404.16 = 79,727.36 : x
  2. Step 2: Convert to fraction form
    130,000.64/179,404.16 = 79,727.36/x
  3. Step 3: Cross multiply
    130,000.64x = 179,404.16 × 79,727.36
  4. Step 4: Simplify right side
    130,000.64x = 14,303,420,049.82
  5. Step 5: Solve for x
    x = 14,303,420,049.82/130,000.64
  6. Step 6: Final answer
    x = 110,025.77

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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.