Home / 155,284.58-214,287.75-87,304.43

Finding the Fourth Proportional to 155,284.58, 214,287.75 and 87,304.43

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Solution

The fourth proportional to 155,284.58, 214,287.75 and 87,304.43 is: 120,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,284.58 : 214,287.75 = 87,304.43 : x
  2. Step 2: Convert to fraction form
    155,284.58/214,287.75 = 87,304.43/x
  3. Step 3: Cross multiply
    155,284.58x = 214,287.75 × 87,304.43
  4. Step 4: Simplify right side
    155,284.58x = 18,708,268,798.29
  5. Step 5: Solve for x
    x = 18,708,268,798.29/155,284.58
  6. Step 6: Final answer
    x = 120,477.32

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1.5x scale

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.