Home / 145,116.06-200,260.26-81,464.64

Finding the Fourth Proportional to 145,116.06, 200,260.26 and 81,464.64

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Solution

The fourth proportional to 145,116.06, 200,260.26 and 81,464.64 is: 112,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,116.06 : 200,260.26 = 81,464.64 : x
  2. Step 2: Convert to fraction form
    145,116.06/200,260.26 = 81,464.64/x
  3. Step 3: Cross multiply
    145,116.06x = 200,260.26 × 81,464.64
  4. Step 4: Simplify right side
    145,116.06x = 16,314,129,987.21
  5. Step 5: Solve for x
    x = 16,314,129,987.21/145,116.06
  6. Step 6: Final answer
    x = 112,421.26

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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.