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Finding the Fourth Proportional to 172,094.12, 258,102.19 and 65,440.05

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Solution

The fourth proportional to 172,094.12, 258,102.19 and 65,440.05 is: 98,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,094.12 : 258,102.19 = 65,440.05 : x
  2. Step 2: Convert to fraction form
    172,094.12/258,102.19 = 65,440.05/x
  3. Step 3: Cross multiply
    172,094.12x = 258,102.19 × 65,440.05
  4. Step 4: Simplify right side
    172,094.12x = 16,890,220,055.11
  5. Step 5: Solve for x
    x = 16,890,220,055.11/172,094.12
  6. Step 6: Final answer
    x = 98,145.25

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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.