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Finding the Fourth Proportional to 100,168.16, 138,191.55 and 59,858.92

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Solution

The fourth proportional to 100,168.16, 138,191.55 and 59,858.92 is: 82,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,168.16 : 138,191.55 = 59,858.92 : x
  2. Step 2: Convert to fraction form
    100,168.16/138,191.55 = 59,858.92/x
  3. Step 3: Cross multiply
    100,168.16x = 138,191.55 × 59,858.92
  4. Step 4: Simplify right side
    100,168.16x = 8,271,996,936.13
  5. Step 5: Solve for x
    x = 8,271,996,936.13/100,168.16
  6. Step 6: Final answer
    x = 82,581.10

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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.