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Finding the Fourth Proportional to 103,671.62, 155,488.59 and 28,772.94

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Solution

The fourth proportional to 103,671.62, 155,488.59 and 28,772.94 is: 43,154.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671.62 : 155,488.59 = 28,772.94 : x
  2. Step 2: Convert to fraction form
    103,671.62/155,488.59 = 28,772.94/x
  3. Step 3: Cross multiply
    103,671.62x = 155,488.59 × 28,772.94
  4. Step 4: Simplify right side
    103,671.62x = 4,473,863,870.75
  5. Step 5: Solve for x
    x = 4,473,863,870.75/103,671.62
  6. Step 6: Final answer
    x = 43,154.18

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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.