Home / 84,391,996.80-126,587,995.20-80,990,774.40

Finding the Fourth Proportional to 84,391,996.80, 126,587,995.20 and 80,990,774.40

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Solution

The fourth proportional to 84,391,996.80, 126,587,995.20 and 80,990,774.40 is: 121,486,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,391,996.80 : 126,587,995.20 = 80,990,774.40 : x
  2. Step 2: Convert to fraction form
    84,391,996.80/126,587,995.20 = 80,990,774.40/x
  3. Step 3: Cross multiply
    84,391,996.80x = 126,587,995.20 × 80,990,774.40
  4. Step 4: Simplify right side
    84,391,996.80x = 10,252,459,760,991,484
  5. Step 5: Solve for x
    x = 10,252,459,760,991,484/84,391,996.80
  6. Step 6: Final answer
    x = 121,486,161.60

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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.