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Finding the Fourth Proportional to 103,305.57, 155,041.38 and 53,400.29

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Solution

The fourth proportional to 103,305.57, 155,041.38 and 53,400.29 is: 80,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,305.57 : 155,041.38 = 53,400.29 : x
  2. Step 2: Convert to fraction form
    103,305.57/155,041.38 = 53,400.29/x
  3. Step 3: Cross multiply
    103,305.57x = 155,041.38 × 53,400.29
  4. Step 4: Simplify right side
    103,305.57x = 8,279,254,654.00
  5. Step 5: Solve for x
    x = 8,279,254,654.00/103,305.57
  6. Step 6: Final answer
    x = 80,143.35

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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.