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Finding the Fourth Proportional to 103,681.62, 155,503.59 and 28,782.94

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Solution

The fourth proportional to 103,681.62, 155,503.59 and 28,782.94 is: 43,169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.62 : 155,503.59 = 28,782.94 : x
  2. Step 2: Convert to fraction form
    103,681.62/155,503.59 = 28,782.94/x
  3. Step 3: Cross multiply
    103,681.62x = 155,503.59 × 28,782.94
  4. Step 4: Simplify right side
    103,681.62x = 4,475,850,500.75
  5. Step 5: Solve for x
    x = 4,475,850,500.75/103,681.62
  6. Step 6: Final answer
    x = 43,169.18

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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.