Home / 155,454.46-231,969.25-138,699.30

Finding the Fourth Proportional to 155,454.46, 231,969.25 and 138,699.30

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Solution

The fourth proportional to 155,454.46, 231,969.25 and 138,699.30 is: 206,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,454.46 : 231,969.25 = 138,699.30 : x
  2. Step 2: Convert to fraction form
    155,454.46/231,969.25 = 138,699.30/x
  3. Step 3: Cross multiply
    155,454.46x = 231,969.25 × 138,699.30
  4. Step 4: Simplify right side
    155,454.46x = 32,173,973,639.78
  5. Step 5: Solve for x
    x = 32,173,973,639.78/155,454.46
  6. Step 6: Final answer
    x = 206,967.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.