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Finding the Fourth Proportional to 145,892.03, 201,326.99 and 81,363.20

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Solution

The fourth proportional to 145,892.03, 201,326.99 and 81,363.20 is: 112,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,892.03 : 201,326.99 = 81,363.20 : x
  2. Step 2: Convert to fraction form
    145,892.03/201,326.99 = 81,363.20/x
  3. Step 3: Cross multiply
    145,892.03x = 201,326.99 × 81,363.20
  4. Step 4: Simplify right side
    145,892.03x = 16,380,606,739.32
  5. Step 5: Solve for x
    x = 16,380,606,739.32/145,892.03
  6. Step 6: Final answer
    x = 112,278.97

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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.