Home / 158,287.02-218,435.31-86,665.74

Finding the Fourth Proportional to 158,287.02, 218,435.31 and 86,665.74

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Solution

The fourth proportional to 158,287.02, 218,435.31 and 86,665.74 is: 119,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,287.02 : 218,435.31 = 86,665.74 : x
  2. Step 2: Convert to fraction form
    158,287.02/218,435.31 = 86,665.74/x
  3. Step 3: Cross multiply
    158,287.02x = 218,435.31 × 86,665.74
  4. Step 4: Simplify right side
    158,287.02x = 18,930,857,783.28
  5. Step 5: Solve for x
    x = 18,930,857,783.28/158,287.02
  6. Step 6: Final answer
    x = 119,598.30

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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.