Home / 125,120.72-172,664.64-71,404.35

Finding the Fourth Proportional to 125,120.72, 172,664.64 and 71,404.35

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Solution

The fourth proportional to 125,120.72, 172,664.64 and 71,404.35 is: 98,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,120.72 : 172,664.64 = 71,404.35 : x
  2. Step 2: Convert to fraction form
    125,120.72/172,664.64 = 71,404.35/x
  3. Step 3: Cross multiply
    125,120.72x = 172,664.64 × 71,404.35
  4. Step 4: Simplify right side
    125,120.72x = 12,329,006,387.18
  5. Step 5: Solve for x
    x = 12,329,006,387.18/125,120.72
  6. Step 6: Final answer
    x = 98,536.89

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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.