Home / 145,084.64-200,216.88-81,422.44

Finding the Fourth Proportional to 145,084.64, 200,216.88 and 81,422.44

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Solution

The fourth proportional to 145,084.64, 200,216.88 and 81,422.44 is: 112,363.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,084.64 : 200,216.88 = 81,422.44 : x
  2. Step 2: Convert to fraction form
    145,084.64/200,216.88 = 81,422.44/x
  3. Step 3: Cross multiply
    145,084.64x = 200,216.88 × 81,422.44
  4. Step 4: Simplify right side
    145,084.64x = 16,302,146,398.25
  5. Step 5: Solve for x
    x = 16,302,146,398.25/145,084.64
  6. Step 6: Final answer
    x = 112,363.01

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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.