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Finding the Fourth Proportional to 173,420.78, 239,249.84 and 137,466.50

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Solution

The fourth proportional to 173,420.78, 239,249.84 and 137,466.50 is: 189,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,420.78 : 239,249.84 = 137,466.50 : x
  2. Step 2: Convert to fraction form
    173,420.78/239,249.84 = 137,466.50/x
  3. Step 3: Cross multiply
    173,420.78x = 239,249.84 × 137,466.50
  4. Step 4: Simplify right side
    173,420.78x = 32,888,838,130.36
  5. Step 5: Solve for x
    x = 32,888,838,130.36/173,420.78
  6. Step 6: Final answer
    x = 189,647.62

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1.5x scale

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.