Home / 81,657,425.60-122,486,138.40-67,485,665.60

Finding the Fourth Proportional to 81,657,425.60, 122,486,138.40 and 67,485,665.60

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Solution

The fourth proportional to 81,657,425.60, 122,486,138.40 and 67,485,665.60 is: 101,228,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,425.60 : 122,486,138.40 = 67,485,665.60 : x
  2. Step 2: Convert to fraction form
    81,657,425.60/122,486,138.40 = 67,485,665.60/x
  3. Step 3: Cross multiply
    81,657,425.60x = 122,486,138.40 × 67,485,665.60
  4. Step 4: Simplify right side
    81,657,425.60x = 8,266,058,576,697,719
  5. Step 5: Solve for x
    x = 8,266,058,576,697,719/81,657,425.60
  6. Step 6: Final answer
    x = 101,228,498.40

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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.