Home / 158,538.12-218,776.80-86,916.57

Finding the Fourth Proportional to 158,538.12, 218,776.80 and 86,916.57

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Solution

The fourth proportional to 158,538.12, 218,776.80 and 86,916.57 is: 119,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,538.12 : 218,776.80 = 86,916.57 : x
  2. Step 2: Convert to fraction form
    158,538.12/218,776.80 = 86,916.57/x
  3. Step 3: Cross multiply
    158,538.12x = 218,776.80 × 86,916.57
  4. Step 4: Simplify right side
    158,538.12x = 19,015,329,051.58
  5. Step 5: Solve for x
    x = 19,015,329,051.58/158,538.12
  6. Step 6: Final answer
    x = 119,941.68

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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.