Home / 109,761.40-164,642.10-30,878.20

Finding the Fourth Proportional to 109,761.40, 164,642.10 and 30,878.20

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Solution

The fourth proportional to 109,761.40, 164,642.10 and 30,878.20 is: 46,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,761.40 : 164,642.10 = 30,878.20 : x
  2. Step 2: Convert to fraction form
    109,761.40/164,642.10 = 30,878.20/x
  3. Step 3: Cross multiply
    109,761.40x = 164,642.10 × 30,878.20
  4. Step 4: Simplify right side
    109,761.40x = 5,083,851,692.22
  5. Step 5: Solve for x
    x = 5,083,851,692.22/109,761.40
  6. Step 6: Final answer
    x = 46,317.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.