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Finding the Fourth Proportional to 145,861.82, 201,288.12 and 81,330.29

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Solution

The fourth proportional to 145,861.82, 201,288.12 and 81,330.29 is: 112,235.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.82 : 201,288.12 = 81,330.29 : x
  2. Step 2: Convert to fraction form
    145,861.82/201,288.12 = 81,330.29/x
  3. Step 3: Cross multiply
    145,861.82x = 201,288.12 × 81,330.29
  4. Step 4: Simplify right side
    145,861.82x = 16,370,821,173.15
  5. Step 5: Solve for x
    x = 16,370,821,173.15/145,861.82
  6. Step 6: Final answer
    x = 112,235.14

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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.