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Finding the Fourth Proportional to 172,725.48, 259,123.32 and 72,885.60

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Solution

The fourth proportional to 172,725.48, 259,123.32 and 72,885.60 is: 109,343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,725.48 : 259,123.32 = 72,885.60 : x
  2. Step 2: Convert to fraction form
    172,725.48/259,123.32 = 72,885.60/x
  3. Step 3: Cross multiply
    172,725.48x = 259,123.32 × 72,885.60
  4. Step 4: Simplify right side
    172,725.48x = 18,886,358,652.19
  5. Step 5: Solve for x
    x = 18,886,358,652.19/172,725.48
  6. Step 6: Final answer
    x = 109,343.21

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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.