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Finding the Fourth Proportional to 152,915.80, 211,016.72 and 84,937.08

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Solution

The fourth proportional to 152,915.80, 211,016.72 and 84,937.08 is: 117,209.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,915.80 : 211,016.72 = 84,937.08 : x
  2. Step 2: Convert to fraction form
    152,915.80/211,016.72 = 84,937.08/x
  3. Step 3: Cross multiply
    152,915.80x = 211,016.72 × 84,937.08
  4. Step 4: Simplify right side
    152,915.80x = 17,923,144,027.98
  5. Step 5: Solve for x
    x = 17,923,144,027.98/152,915.80
  6. Step 6: Final answer
    x = 117,209.24

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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.