Home / 130,911.40-180,674.64-79,913.44

Finding the Fourth Proportional to 130,911.40, 180,674.64 and 79,913.44

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Solution

The fourth proportional to 130,911.40, 180,674.64 and 79,913.44 is: 110,290.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,911.40 : 180,674.64 = 79,913.44 : x
  2. Step 2: Convert to fraction form
    130,911.40/180,674.64 = 79,913.44/x
  3. Step 3: Cross multiply
    130,911.40x = 180,674.64 × 79,913.44
  4. Step 4: Simplify right side
    130,911.40x = 14,438,332,003.16
  5. Step 5: Solve for x
    x = 14,438,332,003.16/130,911.40
  6. Step 6: Final answer
    x = 110,290.87

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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.