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Finding the Fourth Proportional to 152,369.80, 210,268.02 and 85,304.20

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Solution

The fourth proportional to 152,369.80, 210,268.02 and 85,304.20 is: 117,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,369.80 : 210,268.02 = 85,304.20 : x
  2. Step 2: Convert to fraction form
    152,369.80/210,268.02 = 85,304.20/x
  3. Step 3: Cross multiply
    152,369.80x = 210,268.02 × 85,304.20
  4. Step 4: Simplify right side
    152,369.80x = 17,936,745,231.68
  5. Step 5: Solve for x
    x = 17,936,745,231.68/152,369.80
  6. Step 6: Final answer
    x = 117,718.51

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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.