Home / 112,403.78-155,149.54-74,191.22

Finding the Fourth Proportional to 112,403.78, 155,149.54 and 74,191.22

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Solution

The fourth proportional to 112,403.78, 155,149.54 and 74,191.22 is: 102,405.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,403.78 : 155,149.54 = 74,191.22 : x
  2. Step 2: Convert to fraction form
    112,403.78/155,149.54 = 74,191.22/x
  3. Step 3: Cross multiply
    112,403.78x = 155,149.54 × 74,191.22
  4. Step 4: Simplify right side
    112,403.78x = 11,510,733,655.04
  5. Step 5: Solve for x
    x = 11,510,733,655.04/112,403.78
  6. Step 6: Final answer
    x = 102,405.22

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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.