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Finding the Fourth Proportional to 130,497.78, 180,080.91 and 73,909.56

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Solution

The fourth proportional to 130,497.78, 180,080.91 and 73,909.56 is: 101,991.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,497.78 : 180,080.91 = 73,909.56 : x
  2. Step 2: Convert to fraction form
    130,497.78/180,080.91 = 73,909.56/x
  3. Step 3: Cross multiply
    130,497.78x = 180,080.91 × 73,909.56
  4. Step 4: Simplify right side
    130,497.78x = 13,309,700,822.50
  5. Step 5: Solve for x
    x = 13,309,700,822.50/130,497.78
  6. Step 6: Final answer
    x = 101,991.78

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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.