Home / 137,485,029.12-189,723,567.02-77,950,331.36

Finding the Fourth Proportional to 137,485,029.12, 189,723,567.02 and 77,950,331.36

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Solution

The fourth proportional to 137,485,029.12, 189,723,567.02 and 77,950,331.36 is: 107,568,184.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,485,029.12 : 189,723,567.02 = 77,950,331.36 : x
  2. Step 2: Convert to fraction form
    137,485,029.12/189,723,567.02 = 77,950,331.36/x
  3. Step 3: Cross multiply
    137,485,029.12x = 189,723,567.02 × 77,950,331.36
  4. Step 4: Simplify right side
    137,485,029.12x = 14,789,014,914,671,798
  5. Step 5: Solve for x
    x = 14,789,014,914,671,798/137,485,029.12
  6. Step 6: Final answer
    x = 107,568,184.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.