Home / 130,929.01-180,682.18-74,340.39

Finding the Fourth Proportional to 130,929.01, 180,682.18 and 74,340.39

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Solution

The fourth proportional to 130,929.01, 180,682.18 and 74,340.39 is: 102,589.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,929.01 : 180,682.18 = 74,340.39 : x
  2. Step 2: Convert to fraction form
    130,929.01/180,682.18 = 74,340.39/x
  3. Step 3: Cross multiply
    130,929.01x = 180,682.18 × 74,340.39
  4. Step 4: Simplify right side
    130,929.01x = 13,431,982,452.14
  5. Step 5: Solve for x
    x = 13,431,982,452.14/130,929.01
  6. Step 6: Final answer
    x = 102,589.81

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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.