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Finding the Fourth Proportional to 154,894.68, 213,675.66 and 101,211.12

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Solution

The fourth proportional to 154,894.68, 213,675.66 and 101,211.12 is: 139,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,894.68 : 213,675.66 = 101,211.12 : x
  2. Step 2: Convert to fraction form
    154,894.68/213,675.66 = 101,211.12/x
  3. Step 3: Cross multiply
    154,894.68x = 213,675.66 × 101,211.12
  4. Step 4: Simplify right side
    154,894.68x = 21,626,352,865.34
  5. Step 5: Solve for x
    x = 21,626,352,865.34/154,894.68
  6. Step 6: Final answer
    x = 139,619.73

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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.