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Finding the Fourth Proportional to 112,937.88, 155,859.16 and 67,607.09

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Solution

The fourth proportional to 112,937.88, 155,859.16 and 67,607.09 is: 93,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,937.88 : 155,859.16 = 67,607.09 : x
  2. Step 2: Convert to fraction form
    112,937.88/155,859.16 = 67,607.09/x
  3. Step 3: Cross multiply
    112,937.88x = 155,859.16 × 67,607.09
  4. Step 4: Simplify right side
    112,937.88x = 10,537,184,900.62
  5. Step 5: Solve for x
    x = 10,537,184,900.62/112,937.88
  6. Step 6: Final answer
    x = 93,300.71

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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.