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Finding the Fourth Proportional to 135,433.68, 186,990.84 and 84,466.32

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Solution

The fourth proportional to 135,433.68, 186,990.84 and 84,466.32 is: 116,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,433.68 : 186,990.84 = 84,466.32 : x
  2. Step 2: Convert to fraction form
    135,433.68/186,990.84 = 84,466.32/x
  3. Step 3: Cross multiply
    135,433.68x = 186,990.84 × 84,466.32
  4. Step 4: Simplify right side
    135,433.68x = 15,794,428,128.51
  5. Step 5: Solve for x
    x = 15,794,428,128.51/135,433.68
  6. Step 6: Final answer
    x = 116,621.13

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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.