Home / 137,141,600.40-189,201,531.44-78,372,736.88

Finding the Fourth Proportional to 137,141,600.40, 189,201,531.44 and 78,372,736.88

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Solution

The fourth proportional to 137,141,600.40, 189,201,531.44 and 78,372,736.88 is: 108,123,587.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,141,600.40 : 189,201,531.44 = 78,372,736.88 : x
  2. Step 2: Convert to fraction form
    137,141,600.40/189,201,531.44 = 78,372,736.88/x
  3. Step 3: Cross multiply
    137,141,600.40x = 189,201,531.44 × 78,372,736.88
  4. Step 4: Simplify right side
    137,141,600.40x = 14,828,241,840,090,092
  5. Step 5: Solve for x
    x = 14,828,241,840,090,092/137,141,600.40
  6. Step 6: Final answer
    x = 108,123,587.57

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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.