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Finding the Fourth Proportional to 172,657.08, 238,401.90 and 135,038.52

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Solution

The fourth proportional to 172,657.08, 238,401.90 and 135,038.52 is: 186,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,657.08 : 238,401.90 = 135,038.52 : x
  2. Step 2: Convert to fraction form
    172,657.08/238,401.90 = 135,038.52/x
  3. Step 3: Cross multiply
    172,657.08x = 238,401.90 × 135,038.52
  4. Step 4: Simplify right side
    172,657.08x = 32,193,439,741.19
  5. Step 5: Solve for x
    x = 32,193,439,741.19/172,657.08
  6. Step 6: Final answer
    x = 186,458.85

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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.