Home / 112,131.09-154,742.13-61,143.39

Finding the Fourth Proportional to 112,131.09, 154,742.13 and 61,143.39

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Solution

The fourth proportional to 112,131.09, 154,742.13 and 61,143.39 is: 84,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,131.09 : 154,742.13 = 61,143.39 : x
  2. Step 2: Convert to fraction form
    112,131.09/154,742.13 = 61,143.39/x
  3. Step 3: Cross multiply
    112,131.09x = 154,742.13 × 61,143.39
  4. Step 4: Simplify right side
    112,131.09x = 9,461,458,404.02
  5. Step 5: Solve for x
    x = 9,461,458,404.02/112,131.09
  6. Step 6: Final answer
    x = 84,378.55

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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.