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Finding the Fourth Proportional to 103,366.80, 154,855.80 and 53,276.40

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Solution

The fourth proportional to 103,366.80, 154,855.80 and 53,276.40 is: 79,814.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,366.80 : 154,855.80 = 53,276.40 : x
  2. Step 2: Convert to fraction form
    103,366.80/154,855.80 = 53,276.40/x
  3. Step 3: Cross multiply
    103,366.80x = 154,855.80 × 53,276.40
  4. Step 4: Simplify right side
    103,366.80x = 8,250,159,543.12
  5. Step 5: Solve for x
    x = 8,250,159,543.12/103,366.80
  6. Step 6: Final answer
    x = 79,814.40

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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.