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Finding the Fourth Proportional to 130,011.62, 179,412.62 and 72,651.42

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Solution

The fourth proportional to 130,011.62, 179,412.62 and 72,651.42 is: 100,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,011.62 : 179,412.62 = 72,651.42 : x
  2. Step 2: Convert to fraction form
    130,011.62/179,412.62 = 72,651.42/x
  3. Step 3: Cross multiply
    130,011.62x = 179,412.62 × 72,651.42
  4. Step 4: Simplify right side
    130,011.62x = 13,034,581,245.66
  5. Step 5: Solve for x
    x = 13,034,581,245.66/130,011.62
  6. Step 6: Final answer
    x = 100,257.05

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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.