Home / 155,355.20-214,334.88-91,661.12

Finding the Fourth Proportional to 155,355.20, 214,334.88 and 91,661.12

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Solution

The fourth proportional to 155,355.20, 214,334.88 and 91,661.12 is: 126,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,355.20 : 214,334.88 = 91,661.12 : x
  2. Step 2: Convert to fraction form
    155,355.20/214,334.88 = 91,661.12/x
  3. Step 3: Cross multiply
    155,355.20x = 214,334.88 × 91,661.12
  4. Step 4: Simplify right side
    155,355.20x = 19,646,175,155.87
  5. Step 5: Solve for x
    x = 19,646,175,155.87/155,355.20
  6. Step 6: Final answer
    x = 126,459.72

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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.