Home / 120,271.01-165,976.70-77,903.28

Finding the Fourth Proportional to 120,271.01, 165,976.70 and 77,903.28

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Solution

The fourth proportional to 120,271.01, 165,976.70 and 77,903.28 is: 107,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,271.01 : 165,976.70 = 77,903.28 : x
  2. Step 2: Convert to fraction form
    120,271.01/165,976.70 = 77,903.28/x
  3. Step 3: Cross multiply
    120,271.01x = 165,976.70 × 77,903.28
  4. Step 4: Simplify right side
    120,271.01x = 12,930,128,944.06
  5. Step 5: Solve for x
    x = 12,930,128,944.06/120,271.01
  6. Step 6: Final answer
    x = 107,508.28

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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.