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Finding the Fourth Proportional to 125,258.70, 172,864.98 and 68,670.12

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Solution

The fourth proportional to 125,258.70, 172,864.98 and 68,670.12 is: 94,769.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,258.70 : 172,864.98 = 68,670.12 : x
  2. Step 2: Convert to fraction form
    125,258.70/172,864.98 = 68,670.12/x
  3. Step 3: Cross multiply
    125,258.70x = 172,864.98 × 68,670.12
  4. Step 4: Simplify right side
    125,258.70x = 11,870,658,920.40
  5. Step 5: Solve for x
    x = 11,870,658,920.40/125,258.70
  6. Step 6: Final answer
    x = 94,769.14

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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.