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Finding the Fourth Proportional to 203,530.76, 280,881.42 and 112,880.64

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Solution

The fourth proportional to 203,530.76, 280,881.42 and 112,880.64 is: 155,780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,530.76 : 280,881.42 = 112,880.64 : x
  2. Step 2: Convert to fraction form
    203,530.76/280,881.42 = 112,880.64/x
  3. Step 3: Cross multiply
    203,530.76x = 280,881.42 × 112,880.64
  4. Step 4: Simplify right side
    203,530.76x = 31,706,074,138.71
  5. Step 5: Solve for x
    x = 31,706,074,138.71/203,530.76
  6. Step 6: Final answer
    x = 155,780.25

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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.