Home / 125,136.96-172,654.60-71,402.64

Finding the Fourth Proportional to 125,136.96, 172,654.60 and 71,402.64

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Solution

The fourth proportional to 125,136.96, 172,654.60 and 71,402.64 is: 98,516.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,136.96 : 172,654.60 = 71,402.64 : x
  2. Step 2: Convert to fraction form
    125,136.96/172,654.60 = 71,402.64/x
  3. Step 3: Cross multiply
    125,136.96x = 172,654.60 × 71,402.64
  4. Step 4: Simplify right side
    125,136.96x = 12,327,994,248.14
  5. Step 5: Solve for x
    x = 12,327,994,248.14/125,136.96
  6. Step 6: Final answer
    x = 98,516.01

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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.