Home / 149,488.61-206,295.89-81,505.02

Finding the Fourth Proportional to 149,488.61, 206,295.89 and 81,505.02

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Solution

The fourth proportional to 149,488.61, 206,295.89 and 81,505.02 is: 112,477.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,488.61 : 206,295.89 = 81,505.02 : x
  2. Step 2: Convert to fraction form
    149,488.61/206,295.89 = 81,505.02/x
  3. Step 3: Cross multiply
    149,488.61x = 206,295.89 × 81,505.02
  4. Step 4: Simplify right side
    149,488.61x = 16,814,151,006.45
  5. Step 5: Solve for x
    x = 16,814,151,006.45/149,488.61
  6. Step 6: Final answer
    x = 112,477.81

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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.