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Finding the Fourth Proportional to 125,145.22, 172,699.02 and 67,783.11

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Solution

The fourth proportional to 125,145.22, 172,699.02 and 67,783.11 is: 93,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,145.22 : 172,699.02 = 67,783.11 : x
  2. Step 2: Convert to fraction form
    125,145.22/172,699.02 = 67,783.11/x
  3. Step 3: Cross multiply
    125,145.22x = 172,699.02 × 67,783.11
  4. Step 4: Simplify right side
    125,145.22x = 11,706,076,669.55
  5. Step 5: Solve for x
    x = 11,706,076,669.55/125,145.22
  6. Step 6: Final answer
    x = 93,539.94

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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.