Home / 138,982.56-191,795.12-75,320.32

Finding the Fourth Proportional to 138,982.56, 191,795.12 and 75,320.32

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Solution

The fourth proportional to 138,982.56, 191,795.12 and 75,320.32 is: 103,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,982.56 : 191,795.12 = 75,320.32 : x
  2. Step 2: Convert to fraction form
    138,982.56/191,795.12 = 75,320.32/x
  3. Step 3: Cross multiply
    138,982.56x = 191,795.12 × 75,320.32
  4. Step 4: Simplify right side
    138,982.56x = 14,446,069,812.84
  5. Step 5: Solve for x
    x = 14,446,069,812.84/138,982.56
  6. Step 6: Final answer
    x = 103,941.60

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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.