Home / 109,986.10-164,979.15-70,620.10

Finding the Fourth Proportional to 109,986.10, 164,979.15 and 70,620.10

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Solution

The fourth proportional to 109,986.10, 164,979.15 and 70,620.10 is: 105,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,986.10 : 164,979.15 = 70,620.10 : x
  2. Step 2: Convert to fraction form
    109,986.10/164,979.15 = 70,620.10/x
  3. Step 3: Cross multiply
    109,986.10x = 164,979.15 × 70,620.10
  4. Step 4: Simplify right side
    109,986.10x = 11,650,844,070.92
  5. Step 5: Solve for x
    x = 11,650,844,070.92/109,986.10
  6. Step 6: Final answer
    x = 105,930.15

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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.