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Finding the Fourth Proportional to 112,196.40, 168,210.90 and 67,813.80

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Solution

The fourth proportional to 112,196.40, 168,210.90 and 67,813.80 is: 101,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,196.40 : 168,210.90 = 67,813.80 : x
  2. Step 2: Convert to fraction form
    112,196.40/168,210.90 = 67,813.80/x
  3. Step 3: Cross multiply
    112,196.40x = 168,210.90 × 67,813.80
  4. Step 4: Simplify right side
    112,196.40x = 11,407,020,330.42
  5. Step 5: Solve for x
    x = 11,407,020,330.42/112,196.40
  6. Step 6: Final answer
    x = 101,670.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.