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Finding the Fourth Proportional to 173,720.80, 260,667.60 and 68,543.20

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Solution

The fourth proportional to 173,720.80, 260,667.60 and 68,543.20 is: 102,848.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,720.80 : 260,667.60 = 68,543.20 : x
  2. Step 2: Convert to fraction form
    173,720.80/260,667.60 = 68,543.20/x
  3. Step 3: Cross multiply
    173,720.80x = 260,667.60 × 68,543.20
  4. Step 4: Simplify right side
    173,720.80x = 17,866,991,440.32
  5. Step 5: Solve for x
    x = 17,866,991,440.32/173,720.80
  6. Step 6: Final answer
    x = 102,848.89

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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.