Home / 158,563.14-218,815.38-86,943

Finding the Fourth Proportional to 158,563.14, 218,815.38 and 86,943

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Solution

The fourth proportional to 158,563.14, 218,815.38 and 86,943 is: 119,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,563.14 : 218,815.38 = 86,943 : x
  2. Step 2: Convert to fraction form
    158,563.14/218,815.38 = 86,943/x
  3. Step 3: Cross multiply
    158,563.14x = 218,815.38 × 86,943
  4. Step 4: Simplify right side
    158,563.14x = 19,024,465,583.34
  5. Step 5: Solve for x
    x = 19,024,465,583.34/158,563.14
  6. Step 6: Final answer
    x = 119,980.38

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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.