Home / 109,689.40-164,534.10-30,806.20

Finding the Fourth Proportional to 109,689.40, 164,534.10 and 30,806.20

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Solution

The fourth proportional to 109,689.40, 164,534.10 and 30,806.20 is: 46,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,689.40 : 164,534.10 = 30,806.20 : x
  2. Step 2: Convert to fraction form
    109,689.40/164,534.10 = 30,806.20/x
  3. Step 3: Cross multiply
    109,689.40x = 164,534.10 × 30,806.20
  4. Step 4: Simplify right side
    109,689.40x = 5,068,670,391.42
  5. Step 5: Solve for x
    x = 5,068,670,391.42/109,689.40
  6. Step 6: Final answer
    x = 46,209.30

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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.