Home / 112,719.12-155,555.64-62,418.12

Finding the Fourth Proportional to 112,719.12, 155,555.64 and 62,418.12

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Solution

The fourth proportional to 112,719.12, 155,555.64 and 62,418.12 is: 86,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,719.12 : 155,555.64 = 62,418.12 : x
  2. Step 2: Convert to fraction form
    112,719.12/155,555.64 = 62,418.12/x
  3. Step 3: Cross multiply
    112,719.12x = 155,555.64 × 62,418.12
  4. Step 4: Simplify right side
    112,719.12x = 9,709,490,604.20
  5. Step 5: Solve for x
    x = 9,709,490,604.20/112,719.12
  6. Step 6: Final answer
    x = 86,138.81

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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.