Home / 137,561,490.28-189,836,267.94-78,822,883.88

Finding the Fourth Proportional to 137,561,490.28, 189,836,267.94 and 78,822,883.88

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Solution

The fourth proportional to 137,561,490.28, 189,836,267.94 and 78,822,883.88 is: 108,776,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,561,490.28 : 189,836,267.94 = 78,822,883.88 : x
  2. Step 2: Convert to fraction form
    137,561,490.28/189,836,267.94 = 78,822,883.88/x
  3. Step 3: Cross multiply
    137,561,490.28x = 189,836,267.94 × 78,822,883.88
  4. Step 4: Simplify right side
    137,561,490.28x = 14,963,442,104,047,186
  5. Step 5: Solve for x
    x = 14,963,442,104,047,186/137,561,490.28
  6. Step 6: Final answer
    x = 108,776,388.46

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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.