Home / 137,905.18-206,752.53-71,302.79

Finding the Fourth Proportional to 137,905.18, 206,752.53 and 71,302.79

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Solution

The fourth proportional to 137,905.18, 206,752.53 and 71,302.79 is: 106,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.18 : 206,752.53 = 71,302.79 : x
  2. Step 2: Convert to fraction form
    137,905.18/206,752.53 = 71,302.79/x
  3. Step 3: Cross multiply
    137,905.18x = 206,752.53 × 71,302.79
  4. Step 4: Simplify right side
    137,905.18x = 14,742,032,228.56
  5. Step 5: Solve for x
    x = 14,742,032,228.56/137,905.18
  6. Step 6: Final answer
    x = 106,899.77

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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.