Home / 112,883.20-155,708.32-72,649.60

Finding the Fourth Proportional to 112,883.20, 155,708.32 and 72,649.60

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Solution

The fourth proportional to 112,883.20, 155,708.32 and 72,649.60 is: 100,211.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,883.20 : 155,708.32 = 72,649.60 : x
  2. Step 2: Convert to fraction form
    112,883.20/155,708.32 = 72,649.60/x
  3. Step 3: Cross multiply
    112,883.20x = 155,708.32 × 72,649.60
  4. Step 4: Simplify right side
    112,883.20x = 11,312,147,164.67
  5. Step 5: Solve for x
    x = 11,312,147,164.67/112,883.20
  6. Step 6: Final answer
    x = 100,211.08

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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.