Home / 137,141,594.52-189,201,523.34-78,372,731

Finding the Fourth Proportional to 137,141,594.52, 189,201,523.34 and 78,372,731

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Solution

The fourth proportional to 137,141,594.52, 189,201,523.34 and 78,372,731 is: 108,123,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,141,594.52 : 189,201,523.34 = 78,372,731 : x
  2. Step 2: Convert to fraction form
    137,141,594.52/189,201,523.34 = 78,372,731/x
  3. Step 3: Cross multiply
    137,141,594.52x = 189,201,523.34 × 78,372,731
  4. Step 4: Simplify right side
    137,141,594.52x = 14,828,240,093,516,042
  5. Step 5: Solve for x
    x = 14,828,240,093,516,042/137,141,594.52
  6. Step 6: Final answer
    x = 108,123,579.47

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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.