Home / 126,230,810.40-189,235,623.60-85,709,901.60

Finding the Fourth Proportional to 126,230,810.40, 189,235,623.60 and 85,709,901.60

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Solution

The fourth proportional to 126,230,810.40, 189,235,623.60 and 85,709,901.60 is: 128,489,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,230,810.40 : 189,235,623.60 = 85,709,901.60 : x
  2. Step 2: Convert to fraction form
    126,230,810.40/189,235,623.60 = 85,709,901.60/x
  3. Step 3: Cross multiply
    126,230,810.40x = 189,235,623.60 × 85,709,901.60
  4. Step 4: Simplify right side
    126,230,810.40x = 16,219,366,677,970,636
  5. Step 5: Solve for x
    x = 16,219,366,677,970,636/126,230,810.40
  6. Step 6: Final answer
    x = 128,489,761.15

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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.