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Finding the Fourth Proportional to 103,616.55, 155,424.83 and 101,312.55

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Solution

The fourth proportional to 103,616.55, 155,424.83 and 101,312.55 is: 151,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.55 : 155,424.83 = 101,312.55 : x
  2. Step 2: Convert to fraction form
    103,616.55/155,424.83 = 101,312.55/x
  3. Step 3: Cross multiply
    103,616.55x = 155,424.83 × 101,312.55
  4. Step 4: Simplify right side
    103,616.55x = 15,746,485,860.62
  5. Step 5: Solve for x
    x = 15,746,485,860.62/103,616.55
  6. Step 6: Final answer
    x = 151,968.83

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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.