Home / 138,130.32-207,148.38-53,883.84

Finding the Fourth Proportional to 138,130.32, 207,148.38 and 53,883.84

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Solution

The fourth proportional to 138,130.32, 207,148.38 and 53,883.84 is: 80,807.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,130.32 : 207,148.38 = 53,883.84 : x
  2. Step 2: Convert to fraction form
    138,130.32/207,148.38 = 53,883.84/x
  3. Step 3: Cross multiply
    138,130.32x = 207,148.38 × 53,883.84
  4. Step 4: Simplify right side
    138,130.32x = 11,161,950,164.18
  5. Step 5: Solve for x
    x = 11,161,950,164.18/138,130.32
  6. Step 6: Final answer
    x = 80,807.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.