Home / 152,420.94-210,320.96-87,892.56

Finding the Fourth Proportional to 152,420.94, 210,320.96 and 87,892.56

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Solution

The fourth proportional to 152,420.94, 210,320.96 and 87,892.56 is: 121,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,420.94 : 210,320.96 = 87,892.56 : x
  2. Step 2: Convert to fraction form
    152,420.94/210,320.96 = 87,892.56/x
  3. Step 3: Cross multiply
    152,420.94x = 210,320.96 × 87,892.56
  4. Step 4: Simplify right side
    152,420.94x = 18,485,647,156.59
  5. Step 5: Solve for x
    x = 18,485,647,156.59/152,420.94
  6. Step 6: Final answer
    x = 121,280.23

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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.