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Finding the Fourth Proportional to 172,779.72, 238,480.56 and 112,500.96

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Solution

The fourth proportional to 172,779.72, 238,480.56 and 112,500.96 is: 155,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,779.72 : 238,480.56 = 112,500.96 : x
  2. Step 2: Convert to fraction form
    172,779.72/238,480.56 = 112,500.96/x
  3. Step 3: Cross multiply
    172,779.72x = 238,480.56 × 112,500.96
  4. Step 4: Simplify right side
    172,779.72x = 26,829,291,941.34
  5. Step 5: Solve for x
    x = 26,829,291,941.34/172,779.72
  6. Step 6: Final answer
    x = 155,280.33

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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.