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Finding the Fourth Proportional to 110,019.80, 165,029.70 and 70,621.40

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Solution

The fourth proportional to 110,019.80, 165,029.70 and 70,621.40 is: 105,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,019.80 : 165,029.70 = 70,621.40 : x
  2. Step 2: Convert to fraction form
    110,019.80/165,029.70 = 70,621.40/x
  3. Step 3: Cross multiply
    110,019.80x = 165,029.70 × 70,621.40
  4. Step 4: Simplify right side
    110,019.80x = 11,654,628,455.58
  5. Step 5: Solve for x
    x = 11,654,628,455.58/110,019.80
  6. Step 6: Final answer
    x = 105,932.10

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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.