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Finding the Fourth Proportional to 145,475.01, 200,774.88 and 81,825.12

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Solution

The fourth proportional to 145,475.01, 200,774.88 and 81,825.12 is: 112,929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,475.01 : 200,774.88 = 81,825.12 : x
  2. Step 2: Convert to fraction form
    145,475.01/200,774.88 = 81,825.12/x
  3. Step 3: Cross multiply
    145,475.01x = 200,774.88 × 81,825.12
  4. Step 4: Simplify right side
    145,475.01x = 16,428,428,648.99
  5. Step 5: Solve for x
    x = 16,428,428,648.99/145,475.01
  6. Step 6: Final answer
    x = 112,929.56

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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.