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Finding the Fourth Proportional to 112,020.40, 168,030.60 and 67,783.60

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Solution

The fourth proportional to 112,020.40, 168,030.60 and 67,783.60 is: 101,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,020.40 : 168,030.60 = 67,783.60 : x
  2. Step 2: Convert to fraction form
    112,020.40/168,030.60 = 67,783.60/x
  3. Step 3: Cross multiply
    112,020.40x = 168,030.60 × 67,783.60
  4. Step 4: Simplify right side
    112,020.40x = 11,389,718,978.16
  5. Step 5: Solve for x
    x = 11,389,718,978.16/112,020.40
  6. Step 6: Final answer
    x = 101,675.40

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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.