Home / 149,731.50-206,605.98-86,057.40

Finding the Fourth Proportional to 149,731.50, 206,605.98 and 86,057.40

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Solution

The fourth proportional to 149,731.50, 206,605.98 and 86,057.40 is: 118,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,731.50 : 206,605.98 = 86,057.40 : x
  2. Step 2: Convert to fraction form
    149,731.50/206,605.98 = 86,057.40/x
  3. Step 3: Cross multiply
    149,731.50x = 206,605.98 × 86,057.40
  4. Step 4: Simplify right side
    149,731.50x = 17,779,973,463.25
  5. Step 5: Solve for x
    x = 17,779,973,463.25/149,731.50
  6. Step 6: Final answer
    x = 118,745.71

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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.