Home / 147,639.20-221,458.80-54,132.80

Finding the Fourth Proportional to 147,639.20, 221,458.80 and 54,132.80

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Solution

The fourth proportional to 147,639.20, 221,458.80 and 54,132.80 is: 81,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,639.20 : 221,458.80 = 54,132.80 : x
  2. Step 2: Convert to fraction form
    147,639.20/221,458.80 = 54,132.80/x
  3. Step 3: Cross multiply
    147,639.20x = 221,458.80 × 54,132.80
  4. Step 4: Simplify right side
    147,639.20x = 11,988,184,928.64
  5. Step 5: Solve for x
    x = 11,988,184,928.64/147,639.20
  6. Step 6: Final answer
    x = 81,199.20

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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.