Home / 120,274.02-165,980.85-77,906.28

Finding the Fourth Proportional to 120,274.02, 165,980.85 and 77,906.28

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Solution

The fourth proportional to 120,274.02, 165,980.85 and 77,906.28 is: 107,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,274.02 : 165,980.85 = 77,906.28 : x
  2. Step 2: Convert to fraction form
    120,274.02/165,980.85 = 77,906.28/x
  3. Step 3: Cross multiply
    120,274.02x = 165,980.85 × 77,906.28
  4. Step 4: Simplify right side
    120,274.02x = 12,930,950,574.74
  5. Step 5: Solve for x
    x = 12,930,950,574.74/120,274.02
  6. Step 6: Final answer
    x = 107,512.42

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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.