Home / 203,427.36-280,746.40-112,811.75

Finding the Fourth Proportional to 203,427.36, 280,746.40 and 112,811.75

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Solution

The fourth proportional to 203,427.36, 280,746.40 and 112,811.75 is: 155,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,427.36 : 280,746.40 = 112,811.75 : x
  2. Step 2: Convert to fraction form
    203,427.36/280,746.40 = 112,811.75/x
  3. Step 3: Cross multiply
    203,427.36x = 280,746.40 × 112,811.75
  4. Step 4: Simplify right side
    203,427.36x = 31,671,492,828.01
  5. Step 5: Solve for x
    x = 31,671,492,828.01/203,427.36
  6. Step 6: Final answer
    x = 155,689.44

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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.