Home / 149,771.95-206,668.29-86,130.25

Finding the Fourth Proportional to 149,771.95, 206,668.29 and 86,130.25

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Solution

The fourth proportional to 149,771.95, 206,668.29 and 86,130.25 is: 118,849.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,771.95 : 206,668.29 = 86,130.25 : x
  2. Step 2: Convert to fraction form
    149,771.95/206,668.29 = 86,130.25/x
  3. Step 3: Cross multiply
    149,771.95x = 206,668.29 × 86,130.25
  4. Step 4: Simplify right side
    149,771.95x = 17,800,391,484.77
  5. Step 5: Solve for x
    x = 17,800,391,484.77/149,771.95
  6. Step 6: Final answer
    x = 118,849.97

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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.