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Finding the Fourth Proportional to 106,476.80, 159,715.20 and 79,865.60

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Solution

The fourth proportional to 106,476.80, 159,715.20 and 79,865.60 is: 119,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,476.80 : 159,715.20 = 79,865.60 : x
  2. Step 2: Convert to fraction form
    106,476.80/159,715.20 = 79,865.60/x
  3. Step 3: Cross multiply
    106,476.80x = 159,715.20 × 79,865.60
  4. Step 4: Simplify right side
    106,476.80x = 12,755,750,277.12
  5. Step 5: Solve for x
    x = 12,755,750,277.12/106,476.80
  6. Step 6: Final answer
    x = 119,798.40

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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.