Home / 221,178.12-305,265.06-130,527.60

Finding the Fourth Proportional to 221,178.12, 305,265.06 and 130,527.60

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Solution

The fourth proportional to 221,178.12, 305,265.06 and 130,527.60 is: 180,151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,178.12 : 305,265.06 = 130,527.60 : x
  2. Step 2: Convert to fraction form
    221,178.12/305,265.06 = 130,527.60/x
  3. Step 3: Cross multiply
    221,178.12x = 305,265.06 × 130,527.60
  4. Step 4: Simplify right side
    221,178.12x = 39,845,515,645.66
  5. Step 5: Solve for x
    x = 39,845,515,645.66/221,178.12
  6. Step 6: Final answer
    x = 180,151.25

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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.