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Finding the Fourth Proportional to 172,160.78, 257,762.16 and 87,738.92

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Solution

The fourth proportional to 172,160.78, 257,762.16 and 87,738.92 is: 131,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,160.78 : 257,762.16 = 87,738.92 : x
  2. Step 2: Convert to fraction form
    172,160.78/257,762.16 = 87,738.92/x
  3. Step 3: Cross multiply
    172,160.78x = 257,762.16 × 87,738.92
  4. Step 4: Simplify right side
    172,160.78x = 22,615,773,535.27
  5. Step 5: Solve for x
    x = 22,615,773,535.27/172,160.78
  6. Step 6: Final answer
    x = 131,364.26

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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.