Home / 125,138.96-172,657.36-71,404.64

Finding the Fourth Proportional to 125,138.96, 172,657.36 and 71,404.64

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Solution

The fourth proportional to 125,138.96, 172,657.36 and 71,404.64 is: 98,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,138.96 : 172,657.36 = 71,404.64 : x
  2. Step 2: Convert to fraction form
    125,138.96/172,657.36 = 71,404.64/x
  3. Step 3: Cross multiply
    125,138.96x = 172,657.36 × 71,404.64
  4. Step 4: Simplify right side
    125,138.96x = 12,328,536,634.15
  5. Step 5: Solve for x
    x = 12,328,536,634.15/125,138.96
  6. Step 6: Final answer
    x = 98,518.77

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1.5x scale

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.