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Finding the Fourth Proportional to 152,700.12, 228,904.20 and 68,412.96

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Solution

The fourth proportional to 152,700.12, 228,904.20 and 68,412.96 is: 102,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,700.12 : 228,904.20 = 68,412.96 : x
  2. Step 2: Convert to fraction form
    152,700.12/228,904.20 = 68,412.96/x
  3. Step 3: Cross multiply
    152,700.12x = 228,904.20 × 68,412.96
  4. Step 4: Simplify right side
    152,700.12x = 15,660,013,878.43
  5. Step 5: Solve for x
    x = 15,660,013,878.43/152,700.12
  6. Step 6: Final answer
    x = 102,554.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.