Home / 81,653,465.80-122,480,198.70-70,568,000.20

Finding the Fourth Proportional to 81,653,465.80, 122,480,198.70 and 70,568,000.20

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Solution

The fourth proportional to 81,653,465.80, 122,480,198.70 and 70,568,000.20 is: 105,852,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653,465.80 : 122,480,198.70 = 70,568,000.20 : x
  2. Step 2: Convert to fraction form
    81,653,465.80/122,480,198.70 = 70,568,000.20/x
  3. Step 3: Cross multiply
    81,653,465.80x = 122,480,198.70 × 70,568,000.20
  4. Step 4: Simplify right side
    81,653,465.80x = 8,643,182,686,357,640
  5. Step 5: Solve for x
    x = 8,643,182,686,357,640/81,653,465.80
  6. Step 6: Final answer
    x = 105,852,000.30

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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.