Home / 91,808,451.20-137,712,676.80-79,851,028.70

Finding the Fourth Proportional to 91,808,451.20, 137,712,676.80 and 79,851,028.70

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Solution

The fourth proportional to 91,808,451.20, 137,712,676.80 and 79,851,028.70 is: 119,776,543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,451.20 : 137,712,676.80 = 79,851,028.70 : x
  2. Step 2: Convert to fraction form
    91,808,451.20/137,712,676.80 = 79,851,028.70/x
  3. Step 3: Cross multiply
    91,808,451.20x = 137,712,676.80 × 79,851,028.70
  4. Step 4: Simplify right side
    91,808,451.20x = 10,996,498,907,510,626
  5. Step 5: Solve for x
    x = 10,996,498,907,510,626/91,808,451.20
  6. Step 6: Final answer
    x = 119,776,543.05

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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.