Home / 158,538.41-218,782.95-86,916.89

Finding the Fourth Proportional to 158,538.41, 218,782.95 and 86,916.89

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Solution

The fourth proportional to 158,538.41, 218,782.95 and 86,916.89 is: 119,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,538.41 : 218,782.95 = 86,916.89 : x
  2. Step 2: Convert to fraction form
    158,538.41/218,782.95 = 86,916.89/x
  3. Step 3: Cross multiply
    158,538.41x = 218,782.95 × 86,916.89
  4. Step 4: Simplify right side
    158,538.41x = 19,015,932,505.11
  5. Step 5: Solve for x
    x = 19,015,932,505.11/158,538.41
  6. Step 6: Final answer
    x = 119,945.27

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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.