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Finding the Fourth Proportional to 112,611.62, 155,401.84 and 62,310.62

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Solution

The fourth proportional to 112,611.62, 155,401.84 and 62,310.62 is: 85,987.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,611.62 : 155,401.84 = 62,310.62 : x
  2. Step 2: Convert to fraction form
    112,611.62/155,401.84 = 62,310.62/x
  3. Step 3: Cross multiply
    112,611.62x = 155,401.84 × 62,310.62
  4. Step 4: Simplify right side
    112,611.62x = 9,683,184,066.76
  5. Step 5: Solve for x
    x = 9,683,184,066.76/112,611.62
  6. Step 6: Final answer
    x = 85,987.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.