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Finding the Fourth Proportional to 152,816.64, 210,881.50 and 84,836.60

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Solution

The fourth proportional to 152,816.64, 210,881.50 and 84,836.60 is: 117,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,816.64 : 210,881.50 = 84,836.60 : x
  2. Step 2: Convert to fraction form
    152,816.64/210,881.50 = 84,836.60/x
  3. Step 3: Cross multiply
    152,816.64x = 210,881.50 × 84,836.60
  4. Step 4: Simplify right side
    152,816.64x = 17,890,469,462.90
  5. Step 5: Solve for x
    x = 17,890,469,462.90/152,816.64
  6. Step 6: Final answer
    x = 117,071.48

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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.