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Finding the Fourth Proportional to 125,258.62, 172,856.26 and 67,897.72

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Solution

The fourth proportional to 125,258.62, 172,856.26 and 67,897.72 is: 93,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,258.62 : 172,856.26 = 67,897.72 : x
  2. Step 2: Convert to fraction form
    125,258.62/172,856.26 = 67,897.72/x
  3. Step 3: Cross multiply
    125,258.62x = 172,856.26 × 67,897.72
  4. Step 4: Simplify right side
    125,258.62x = 11,736,545,941.73
  5. Step 5: Solve for x
    x = 11,736,545,941.73/125,258.62
  6. Step 6: Final answer
    x = 93,698.51

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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.