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Finding the Fourth Proportional to 124,677.20, 172,051.80 and 68,088.80

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Solution

The fourth proportional to 124,677.20, 172,051.80 and 68,088.80 is: 93,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,677.20 : 172,051.80 = 68,088.80 : x
  2. Step 2: Convert to fraction form
    124,677.20/172,051.80 = 68,088.80/x
  3. Step 3: Cross multiply
    124,677.20x = 172,051.80 × 68,088.80
  4. Step 4: Simplify right side
    124,677.20x = 11,714,800,599.84
  5. Step 5: Solve for x
    x = 11,714,800,599.84/124,677.20
  6. Step 6: Final answer
    x = 93,961.05

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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.