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Finding the Fourth Proportional to 109,072.80, 163,609.20 and 106,448.40

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Solution

The fourth proportional to 109,072.80, 163,609.20 and 106,448.40 is: 159,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,072.80 : 163,609.20 = 106,448.40 : x
  2. Step 2: Convert to fraction form
    109,072.80/163,609.20 = 106,448.40/x
  3. Step 3: Cross multiply
    109,072.80x = 163,609.20 × 106,448.40
  4. Step 4: Simplify right side
    109,072.80x = 17,415,937,565.28
  5. Step 5: Solve for x
    x = 17,415,937,565.28/109,072.80
  6. Step 6: Final answer
    x = 159,672.60

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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.