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Finding the Fourth Proportional to 70,205,998.80, 105,120,041.40 and 70,205,998.80

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Solution

The fourth proportional to 70,205,998.80, 105,120,041.40 and 70,205,998.80 is: 105,120,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,205,998.80 : 105,120,041.40 = 70,205,998.80 : x
  2. Step 2: Convert to fraction form
    70,205,998.80/105,120,041.40 = 70,205,998.80/x
  3. Step 3: Cross multiply
    70,205,998.80x = 105,120,041.40 × 70,205,998.80
  4. Step 4: Simplify right side
    70,205,998.80x = 7,380,057,500,384,350
  5. Step 5: Solve for x
    x = 7,380,057,500,384,350/70,205,998.80
  6. Step 6: Final answer
    x = 105,120,041.40

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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.