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Finding the Fourth Proportional to 134,428.80, 201,643.20 and 55,599.60

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Solution

The fourth proportional to 134,428.80, 201,643.20 and 55,599.60 is: 83,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,428.80 : 201,643.20 = 55,599.60 : x
  2. Step 2: Convert to fraction form
    134,428.80/201,643.20 = 55,599.60/x
  3. Step 3: Cross multiply
    134,428.80x = 201,643.20 × 55,599.60
  4. Step 4: Simplify right side
    134,428.80x = 11,211,281,262.72
  5. Step 5: Solve for x
    x = 11,211,281,262.72/134,428.80
  6. Step 6: Final answer
    x = 83,399.40

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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.