Home / 103,781.20-155,671.80-93,611.65

Finding the Fourth Proportional to 103,781.20, 155,671.80 and 93,611.65

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Solution

The fourth proportional to 103,781.20, 155,671.80 and 93,611.65 is: 140,417.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,781.20 : 155,671.80 = 93,611.65 : x
  2. Step 2: Convert to fraction form
    103,781.20/155,671.80 = 93,611.65/x
  3. Step 3: Cross multiply
    103,781.20x = 155,671.80 × 93,611.65
  4. Step 4: Simplify right side
    103,781.20x = 14,572,694,056.47
  5. Step 5: Solve for x
    x = 14,572,694,056.47/103,781.20
  6. Step 6: Final answer
    x = 140,417.48

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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.