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Finding the Fourth Proportional to 155,861.01, 215,088.14 and 84,241.03

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Solution

The fourth proportional to 155,861.01, 215,088.14 and 84,241.03 is: 116,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,861.01 : 215,088.14 = 84,241.03 : x
  2. Step 2: Convert to fraction form
    155,861.01/215,088.14 = 84,241.03/x
  3. Step 3: Cross multiply
    155,861.01x = 215,088.14 × 84,241.03
  4. Step 4: Simplify right side
    155,861.01x = 18,119,247,080.20
  5. Step 5: Solve for x
    x = 18,119,247,080.20/155,861.01
  6. Step 6: Final answer
    x = 116,252.60

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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.