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Finding the Fourth Proportional to 172,392.30, 258,588.45 and 119,904.30

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Solution

The fourth proportional to 172,392.30, 258,588.45 and 119,904.30 is: 179,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,392.30 : 258,588.45 = 119,904.30 : x
  2. Step 2: Convert to fraction form
    172,392.30/258,588.45 = 119,904.30/x
  3. Step 3: Cross multiply
    172,392.30x = 258,588.45 × 119,904.30
  4. Step 4: Simplify right side
    172,392.30x = 31,005,867,085.34
  5. Step 5: Solve for x
    x = 31,005,867,085.34/172,392.30
  6. Step 6: Final answer
    x = 179,856.45

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1.5x scale

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.