Home / 203,021.49-280,165.64-112,372.16

Finding the Fourth Proportional to 203,021.49, 280,165.64 and 112,372.16

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Solution

The fourth proportional to 203,021.49, 280,165.64 and 112,372.16 is: 155,071.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,021.49 : 280,165.64 = 112,372.16 : x
  2. Step 2: Convert to fraction form
    203,021.49/280,165.64 = 112,372.16/x
  3. Step 3: Cross multiply
    203,021.49x = 280,165.64 × 112,372.16
  4. Step 4: Simplify right side
    203,021.49x = 31,482,817,737.83
  5. Step 5: Solve for x
    x = 31,482,817,737.83/203,021.49
  6. Step 6: Final answer
    x = 155,071.36

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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.