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Finding the Fourth Proportional to 103,656.13, 155,484.15 and 28,776.27

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Solution

The fourth proportional to 103,656.13, 155,484.15 and 28,776.27 is: 43,164.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,656.13 : 155,484.15 = 28,776.27 : x
  2. Step 2: Convert to fraction form
    103,656.13/155,484.15 = 28,776.27/x
  3. Step 3: Cross multiply
    103,656.13x = 155,484.15 × 28,776.27
  4. Step 4: Simplify right side
    103,656.13x = 4,474,253,881.12
  5. Step 5: Solve for x
    x = 4,474,253,881.12/103,656.13
  6. Step 6: Final answer
    x = 43,164.39

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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.