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Finding the Fourth Proportional to 112,970.56, 155,903.52 and 68,249.92

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Solution

The fourth proportional to 112,970.56, 155,903.52 and 68,249.92 is: 94,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,970.56 : 155,903.52 = 68,249.92 : x
  2. Step 2: Convert to fraction form
    112,970.56/155,903.52 = 68,249.92/x
  3. Step 3: Cross multiply
    112,970.56x = 155,903.52 × 68,249.92
  4. Step 4: Simplify right side
    112,970.56x = 10,640,402,767.72
  5. Step 5: Solve for x
    x = 10,640,402,767.72/112,970.56
  6. Step 6: Final answer
    x = 94,187.40

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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.