Home / 130,185.20-179,647.10-72,814.58

Finding the Fourth Proportional to 130,185.20, 179,647.10 and 72,814.58

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Solution

The fourth proportional to 130,185.20, 179,647.10 and 72,814.58 is: 100,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,185.20 : 179,647.10 = 72,814.58 : x
  2. Step 2: Convert to fraction form
    130,185.20/179,647.10 = 72,814.58/x
  3. Step 3: Cross multiply
    130,185.20x = 179,647.10 × 72,814.58
  4. Step 4: Simplify right side
    130,185.20x = 13,080,929,239.24
  5. Step 5: Solve for x
    x = 13,080,929,239.24/130,185.20
  6. Step 6: Final answer
    x = 100,479.39

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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.