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Finding the Fourth Proportional to 173,431.98, 239,374.71 and 105,434.54

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Solution

The fourth proportional to 173,431.98, 239,374.71 and 105,434.54 is: 145,523.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,431.98 : 239,374.71 = 105,434.54 : x
  2. Step 2: Convert to fraction form
    173,431.98/239,374.71 = 105,434.54/x
  3. Step 3: Cross multiply
    173,431.98x = 239,374.71 × 105,434.54
  4. Step 4: Simplify right side
    173,431.98x = 25,238,361,239.61
  5. Step 5: Solve for x
    x = 25,238,361,239.61/173,431.98
  6. Step 6: Final answer
    x = 145,523.11

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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.