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Finding the Fourth Proportional to 173,415.78, 239,242.95 and 137,461.50

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Solution

The fourth proportional to 173,415.78, 239,242.95 and 137,461.50 is: 189,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,415.78 : 239,242.95 = 137,461.50 : x
  2. Step 2: Convert to fraction form
    173,415.78/239,242.95 = 137,461.50/x
  3. Step 3: Cross multiply
    173,415.78x = 239,242.95 × 137,461.50
  4. Step 4: Simplify right side
    173,415.78x = 32,886,694,771.43
  5. Step 5: Solve for x
    x = 32,886,694,771.43/173,415.78
  6. Step 6: Final answer
    x = 189,640.73

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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.