Home / 138,848.72-191,610.96-75,186.32

Finding the Fourth Proportional to 138,848.72, 191,610.96 and 75,186.32

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Solution

The fourth proportional to 138,848.72, 191,610.96 and 75,186.32 is: 103,756.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,848.72 : 191,610.96 = 75,186.32 : x
  2. Step 2: Convert to fraction form
    138,848.72/191,610.96 = 75,186.32/x
  3. Step 3: Cross multiply
    138,848.72x = 191,610.96 × 75,186.32
  4. Step 4: Simplify right side
    138,848.72x = 14,406,522,954.07
  5. Step 5: Solve for x
    x = 14,406,522,954.07/138,848.72
  6. Step 6: Final answer
    x = 103,756.97

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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.