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Finding the Fourth Proportional to 112,703.49, 155,520.05 and 67,372.47

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Solution

The fourth proportional to 112,703.49, 155,520.05 and 67,372.47 is: 92,967.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.49 : 155,520.05 = 67,372.47 : x
  2. Step 2: Convert to fraction form
    112,703.49/155,520.05 = 67,372.47/x
  3. Step 3: Cross multiply
    112,703.49x = 155,520.05 × 67,372.47
  4. Step 4: Simplify right side
    112,703.49x = 10,477,769,566.16
  5. Step 5: Solve for x
    x = 10,477,769,566.16/112,703.49
  6. Step 6: Final answer
    x = 92,967.57

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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.