Home / 120,831,810.80-181,247,716.20-74,915,308.40

Finding the Fourth Proportional to 120,831,810.80, 181,247,716.20 and 74,915,308.40

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Solution

The fourth proportional to 120,831,810.80, 181,247,716.20 and 74,915,308.40 is: 112,372,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,831,810.80 : 181,247,716.20 = 74,915,308.40 : x
  2. Step 2: Convert to fraction form
    120,831,810.80/181,247,716.20 = 74,915,308.40/x
  3. Step 3: Cross multiply
    120,831,810.80x = 181,247,716.20 × 74,915,308.40
  4. Step 4: Simplify right side
    120,831,810.80x = 13,578,228,555,918,676
  5. Step 5: Solve for x
    x = 13,578,228,555,918,676/120,831,810.80
  6. Step 6: Final answer
    x = 112,372,962.60

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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.