Home / 138,795.83-191,538.68-75,133.47

Finding the Fourth Proportional to 138,795.83, 191,538.68 and 75,133.47

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Solution

The fourth proportional to 138,795.83, 191,538.68 and 75,133.47 is: 103,684.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,795.83 : 191,538.68 = 75,133.47 : x
  2. Step 2: Convert to fraction form
    138,795.83/191,538.68 = 75,133.47/x
  3. Step 3: Cross multiply
    138,795.83x = 191,538.68 × 75,133.47
  4. Step 4: Simplify right side
    138,795.83x = 14,390,966,010.22
  5. Step 5: Solve for x
    x = 14,390,966,010.22/138,795.83
  6. Step 6: Final answer
    x = 103,684.43

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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.