Home / 109,427.21-164,140.76-84,503.60

Finding the Fourth Proportional to 109,427.21, 164,140.76 and 84,503.60

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Solution

The fourth proportional to 109,427.21, 164,140.76 and 84,503.60 is: 126,755.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,427.21 : 164,140.76 = 84,503.60 : x
  2. Step 2: Convert to fraction form
    109,427.21/164,140.76 = 84,503.60/x
  3. Step 3: Cross multiply
    109,427.21x = 164,140.76 × 84,503.60
  4. Step 4: Simplify right side
    109,427.21x = 13,870,483,883.51
  5. Step 5: Solve for x
    x = 13,870,483,883.51/109,427.21
  6. Step 6: Final answer
    x = 126,755.35

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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.