Home / 130,143.74-179,597.10-72,782.42

Finding the Fourth Proportional to 130,143.74, 179,597.10 and 72,782.42

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Solution

The fourth proportional to 130,143.74, 179,597.10 and 72,782.42 is: 100,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,143.74 : 179,597.10 = 72,782.42 : x
  2. Step 2: Convert to fraction form
    130,143.74/179,597.10 = 72,782.42/x
  3. Step 3: Cross multiply
    130,143.74x = 179,597.10 × 72,782.42
  4. Step 4: Simplify right side
    130,143.74x = 13,071,511,562.98
  5. Step 5: Solve for x
    x = 13,071,511,562.98/130,143.74
  6. Step 6: Final answer
    x = 100,439.03

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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.