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Finding the Fourth Proportional to 109,640.80, 164,461.20 and 39,494.80

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Solution

The fourth proportional to 109,640.80, 164,461.20 and 39,494.80 is: 59,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,640.80 : 164,461.20 = 39,494.80 : x
  2. Step 2: Convert to fraction form
    109,640.80/164,461.20 = 39,494.80/x
  3. Step 3: Cross multiply
    109,640.80x = 164,461.20 × 39,494.80
  4. Step 4: Simplify right side
    109,640.80x = 6,495,362,201.76
  5. Step 5: Solve for x
    x = 6,495,362,201.76/109,640.80
  6. Step 6: Final answer
    x = 59,242.20

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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.