Home / 138,600,533.31-191,268,739.76-76,720,871.86

Finding the Fourth Proportional to 138,600,533.31, 191,268,739.76 and 76,720,871.86

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Solution

The fourth proportional to 138,600,533.31, 191,268,739.76 and 76,720,871.86 is: 105,874,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,600,533.31 : 191,268,739.76 = 76,720,871.86 : x
  2. Step 2: Convert to fraction form
    138,600,533.31/191,268,739.76 = 76,720,871.86/x
  3. Step 3: Cross multiply
    138,600,533.31x = 191,268,739.76 × 76,720,871.86
  4. Step 4: Simplify right side
    138,600,533.31x = 14,674,304,473,950,646
  5. Step 5: Solve for x
    x = 14,674,304,473,950,646/138,600,533.31
  6. Step 6: Final answer
    x = 105,874,805.27

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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.