Home / 112,945.77-155,877.44-72,147.44

Finding the Fourth Proportional to 112,945.77, 155,877.44 and 72,147.44

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Solution

The fourth proportional to 112,945.77, 155,877.44 and 72,147.44 is: 99,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,945.77 : 155,877.44 = 72,147.44 : x
  2. Step 2: Convert to fraction form
    112,945.77/155,877.44 = 72,147.44/x
  3. Step 3: Cross multiply
    112,945.77x = 155,877.44 × 72,147.44
  4. Step 4: Simplify right side
    112,945.77x = 11,246,158,278.71
  5. Step 5: Solve for x
    x = 11,246,158,278.71/112,945.77
  6. Step 6: Final answer
    x = 99,571.31

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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.