Home / 112,403.64-155,220.61-72,187.46

Finding the Fourth Proportional to 112,403.64, 155,220.61 and 72,187.46

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Solution

The fourth proportional to 112,403.64, 155,220.61 and 72,187.46 is: 99,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,403.64 : 155,220.61 = 72,187.46 : x
  2. Step 2: Convert to fraction form
    112,403.64/155,220.61 = 72,187.46/x
  3. Step 3: Cross multiply
    112,403.64x = 155,220.61 × 72,187.46
  4. Step 4: Simplify right side
    112,403.64x = 11,204,981,575.55
  5. Step 5: Solve for x
    x = 11,204,981,575.55/112,403.64
  6. Step 6: Final answer
    x = 99,685.22

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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.