Home / 81,143.10-121,714.65-46,151.10

Finding the Fourth Proportional to 81,143.10, 121,714.65 and 46,151.10

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Solution

The fourth proportional to 81,143.10, 121,714.65 and 46,151.10 is: 69,226.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.10 : 121,714.65 = 46,151.10 : x
  2. Step 2: Convert to fraction form
    81,143.10/121,714.65 = 46,151.10/x
  3. Step 3: Cross multiply
    81,143.10x = 121,714.65 × 46,151.10
  4. Step 4: Simplify right side
    81,143.10x = 5,617,264,983.62
  5. Step 5: Solve for x
    x = 5,617,264,983.62/81,143.10
  6. Step 6: Final answer
    x = 69,226.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.