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Finding the Fourth Proportional to 172,152.78, 257,750.16 and 87,730.92

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Solution

The fourth proportional to 172,152.78, 257,750.16 and 87,730.92 is: 131,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,152.78 : 257,750.16 = 87,730.92 : x
  2. Step 2: Convert to fraction form
    172,152.78/257,750.16 = 87,730.92/x
  3. Step 3: Cross multiply
    172,152.78x = 257,750.16 × 87,730.92
  4. Step 4: Simplify right side
    172,152.78x = 22,612,658,666.95
  5. Step 5: Solve for x
    x = 22,612,658,666.95/172,152.78
  6. Step 6: Final answer
    x = 131,352.27

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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.