Home / 112,530.76-155,219.27-72,180.61

Finding the Fourth Proportional to 112,530.76, 155,219.27 and 72,180.61

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Solution

The fourth proportional to 112,530.76, 155,219.27 and 72,180.61 is: 99,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,530.76 : 155,219.27 = 72,180.61 : x
  2. Step 2: Convert to fraction form
    112,530.76/155,219.27 = 72,180.61/x
  3. Step 3: Cross multiply
    112,530.76x = 155,219.27 × 72,180.61
  4. Step 4: Simplify right side
    112,530.76x = 11,203,820,816.26
  5. Step 5: Solve for x
    x = 11,203,820,816.26/112,530.76
  6. Step 6: Final answer
    x = 99,562.30

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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.