Home / 153,758.40-212,196.96-85,787.52

Finding the Fourth Proportional to 153,758.40, 212,196.96 and 85,787.52

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Solution

The fourth proportional to 153,758.40, 212,196.96 and 85,787.52 is: 118,392.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,758.40 : 212,196.96 = 85,787.52 : x
  2. Step 2: Convert to fraction form
    153,758.40/212,196.96 = 85,787.52/x
  3. Step 3: Cross multiply
    153,758.40x = 212,196.96 × 85,787.52
  4. Step 4: Simplify right side
    153,758.40x = 18,203,850,949.94
  5. Step 5: Solve for x
    x = 18,203,850,949.94/153,758.40
  6. Step 6: Final answer
    x = 118,392.56

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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.