Home / 137,275,341.76-189,393,880.48-77,728,515.04

Finding the Fourth Proportional to 137,275,341.76, 189,393,880.48 and 77,728,515.04

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Solution

The fourth proportional to 137,275,341.76, 189,393,880.48 and 77,728,515.04 is: 107,239,252.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,275,341.76 : 189,393,880.48 = 77,728,515.04 : x
  2. Step 2: Convert to fraction form
    137,275,341.76/189,393,880.48 = 77,728,515.04/x
  3. Step 3: Cross multiply
    137,275,341.76x = 189,393,880.48 × 77,728,515.04
  4. Step 4: Simplify right side
    137,275,341.76x = 14,721,305,087,373,642
  5. Step 5: Solve for x
    x = 14,721,305,087,373,642/137,275,341.76
  6. Step 6: Final answer
    x = 107,239,252.87

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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.