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Finding the Fourth Proportional to 112,398.90, 167,778.41 and 98,211

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Solution

The fourth proportional to 112,398.90, 167,778.41 and 98,211 is: 146,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,398.90 : 167,778.41 = 98,211 : x
  2. Step 2: Convert to fraction form
    112,398.90/167,778.41 = 98,211/x
  3. Step 3: Cross multiply
    112,398.90x = 167,778.41 × 98,211
  4. Step 4: Simplify right side
    112,398.90x = 16,477,684,933.46
  5. Step 5: Solve for x
    x = 16,477,684,933.46/112,398.90
  6. Step 6: Final answer
    x = 146,600.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.