Home / 81,657,426.60-122,486,139.90-67,485,666.60

Finding the Fourth Proportional to 81,657,426.60, 122,486,139.90 and 67,485,666.60

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Solution

The fourth proportional to 81,657,426.60, 122,486,139.90 and 67,485,666.60 is: 101,228,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,426.60 : 122,486,139.90 = 67,485,666.60 : x
  2. Step 2: Convert to fraction form
    81,657,426.60/122,486,139.90 = 67,485,666.60/x
  3. Step 3: Cross multiply
    81,657,426.60x = 122,486,139.90 × 67,485,666.60
  4. Step 4: Simplify right side
    81,657,426.60x = 8,266,058,800,412,357
  5. Step 5: Solve for x
    x = 8,266,058,800,412,357/81,657,426.60
  6. Step 6: Final answer
    x = 101,228,499.90

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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.